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Finding the Fourth Proportional to 639,508.77, 959,314.19 and 373,296.20

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Solution

The fourth proportional to 639,508.77, 959,314.19 and 373,296.20 is: 559,974.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,508.77 : 959,314.19 = 373,296.20 : x
  2. Step 2: Convert to fraction form
    639,508.77/959,314.19 = 373,296.20/x
  3. Step 3: Cross multiply
    639,508.77x = 959,314.19 × 373,296.20
  4. Step 4: Simplify right side
    639,508.77x = 358,108,335,070.03
  5. Step 5: Solve for x
    x = 358,108,335,070.03/639,508.77
  6. Step 6: Final answer
    x = 559,974.08

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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.