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Finding the Fourth Proportional to 692,316.72, 955,248.80 and 520,418.52

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Solution

The fourth proportional to 692,316.72, 955,248.80 and 520,418.52 is: 718,066.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,316.72 : 955,248.80 = 520,418.52 : x
  2. Step 2: Convert to fraction form
    692,316.72/955,248.80 = 520,418.52/x
  3. Step 3: Cross multiply
    692,316.72x = 955,248.80 × 520,418.52
  4. Step 4: Simplify right side
    692,316.72x = 497,129,164,125.68
  5. Step 5: Solve for x
    x = 497,129,164,125.68/692,316.72
  6. Step 6: Final answer
    x = 718,066.10

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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.