Home / 842,890.40-1,264,335.60-559,455.20

Finding the Fourth Proportional to 842,890.40, 1,264,335.60 and 559,455.20

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Solution

The fourth proportional to 842,890.40, 1,264,335.60 and 559,455.20 is: 839,182.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,890.40 : 1,264,335.60 = 559,455.20 : x
  2. Step 2: Convert to fraction form
    842,890.40/1,264,335.60 = 559,455.20/x
  3. Step 3: Cross multiply
    842,890.40x = 1,264,335.60 × 559,455.20
  4. Step 4: Simplify right side
    842,890.40x = 707,339,125,965.12
  5. Step 5: Solve for x
    x = 707,339,125,965.12/842,890.40
  6. Step 6: Final answer
    x = 839,182.80

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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.