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Finding the Fourth Proportional to 676,992.32, 934,345.10 and 418,952.37

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Solution

The fourth proportional to 676,992.32, 934,345.10 and 418,952.37 is: 578,213.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    676,992.32 : 934,345.10 = 418,952.37 : x
  2. Step 2: Convert to fraction form
    676,992.32/934,345.10 = 418,952.37/x
  3. Step 3: Cross multiply
    676,992.32x = 934,345.10 × 418,952.37
  4. Step 4: Simplify right side
    676,992.32x = 391,446,091,948.13
  5. Step 5: Solve for x
    x = 391,446,091,948.13/676,992.32
  6. Step 6: Final answer
    x = 578,213.49

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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.