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Finding the Fourth Proportional to 617,605.01, 851,618.10 and 402,345.89

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Solution

The fourth proportional to 617,605.01, 851,618.10 and 402,345.89 is: 554,796.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,605.01 : 851,618.10 = 402,345.89 : x
  2. Step 2: Convert to fraction form
    617,605.01/851,618.10 = 402,345.89/x
  3. Step 3: Cross multiply
    617,605.01x = 851,618.10 × 402,345.89
  4. Step 4: Simplify right side
    617,605.01x = 342,645,038,126.52
  5. Step 5: Solve for x
    x = 342,645,038,126.52/617,605.01
  6. Step 6: Final answer
    x = 554,796.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.