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Finding the Fourth Proportional to 639,555.38, 959,256.66 and 497,542.40

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Solution

The fourth proportional to 639,555.38, 959,256.66 and 497,542.40 is: 746,254.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,555.38 : 959,256.66 = 497,542.40 : x
  2. Step 2: Convert to fraction form
    639,555.38/959,256.66 = 497,542.40/x
  3. Step 3: Cross multiply
    639,555.38x = 959,256.66 × 497,542.40
  4. Step 4: Simplify right side
    639,555.38x = 477,270,860,832.38
  5. Step 5: Solve for x
    x = 477,270,860,832.38/639,555.38
  6. Step 6: Final answer
    x = 746,254.16

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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.