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Finding the Fourth Proportional to 676,661.52, 933,892.32 and 390,125.52

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Solution

The fourth proportional to 676,661.52, 933,892.32 and 390,125.52 is: 538,430.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,661.52 : 933,892.32 = 390,125.52 : x
  2. Step 2: Convert to fraction form
    676,661.52/933,892.32 = 390,125.52/x
  3. Step 3: Cross multiply
    676,661.52x = 933,892.32 × 390,125.52
  4. Step 4: Simplify right side
    676,661.52x = 364,335,226,964.01
  5. Step 5: Solve for x
    x = 364,335,226,964.01/676,661.52
  6. Step 6: Final answer
    x = 538,430.54

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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.