Home / 572,743.10-859,114.65-319,763.90

Finding the Fourth Proportional to 572,743.10, 859,114.65 and 319,763.90

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Solution

The fourth proportional to 572,743.10, 859,114.65 and 319,763.90 is: 479,645.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,743.10 : 859,114.65 = 319,763.90 : x
  2. Step 2: Convert to fraction form
    572,743.10/859,114.65 = 319,763.90/x
  3. Step 3: Cross multiply
    572,743.10x = 859,114.65 × 319,763.90
  4. Step 4: Simplify right side
    572,743.10x = 274,713,851,031.14
  5. Step 5: Solve for x
    x = 274,713,851,031.14/572,743.10
  6. Step 6: Final answer
    x = 479,645.85

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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.