Home / 1,238,842,478.40-1,858,263,717.60-715,107,372.90

Finding the Fourth Proportional to 1,238,842,478.40, 1,858,263,717.60 and 715,107,372.90

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Solution

The fourth proportional to 1,238,842,478.40, 1,858,263,717.60 and 715,107,372.90 is: 1,072,661,059.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,238,842,478.40 : 1,858,263,717.60 = 715,107,372.90 : x
  2. Step 2: Convert to fraction form
    1,238,842,478.40/1,858,263,717.60 = 715,107,372.90/x
  3. Step 3: Cross multiply
    1,238,842,478.40x = 1,858,263,717.60 × 715,107,372.90
  4. Step 4: Simplify right side
    1,238,842,478.40x = 1,328,858,085,248,323,328
  5. Step 5: Solve for x
    x = 1,328,858,085,248,323,328/1,238,842,478.40
  6. Step 6: Final answer
    x = 1,072,661,059.35

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.