Home / 749,009.20-1,123,513.80-299,799.40

Finding the Fourth Proportional to 749,009.20, 1,123,513.80 and 299,799.40

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Solution

The fourth proportional to 749,009.20, 1,123,513.80 and 299,799.40 is: 449,699.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    749,009.20 : 1,123,513.80 = 299,799.40 : x
  2. Step 2: Convert to fraction form
    749,009.20/1,123,513.80 = 299,799.40/x
  3. Step 3: Cross multiply
    749,009.20x = 1,123,513.80 × 299,799.40
  4. Step 4: Simplify right side
    749,009.20x = 336,828,763,131.72
  5. Step 5: Solve for x
    x = 336,828,763,131.72/749,009.20
  6. Step 6: Final answer
    x = 449,699.10

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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.