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Finding the Fourth Proportional to 673,702.37, 929,711.38 and 431,985.90

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Solution

The fourth proportional to 673,702.37, 929,711.38 and 431,985.90 is: 596,141.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,702.37 : 929,711.38 = 431,985.90 : x
  2. Step 2: Convert to fraction form
    673,702.37/929,711.38 = 431,985.90/x
  3. Step 3: Cross multiply
    673,702.37x = 929,711.38 × 431,985.90
  4. Step 4: Simplify right side
    673,702.37x = 401,622,207,229.54
  5. Step 5: Solve for x
    x = 401,622,207,229.54/673,702.37
  6. Step 6: Final answer
    x = 596,141.89

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Double scale
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1.5x scale

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.