Home / 921,312.72-1,381,499.28-691,508.16

Finding the Fourth Proportional to 921,312.72, 1,381,499.28 and 691,508.16

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Solution

The fourth proportional to 921,312.72, 1,381,499.28 and 691,508.16 is: 1,036,909.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,312.72 : 1,381,499.28 = 691,508.16 : x
  2. Step 2: Convert to fraction form
    921,312.72/1,381,499.28 = 691,508.16/x
  3. Step 3: Cross multiply
    921,312.72x = 1,381,499.28 × 691,508.16
  4. Step 4: Simplify right side
    921,312.72x = 955,318,025,154.13
  5. Step 5: Solve for x
    x = 955,318,025,154.13/921,312.72
  6. Step 6: Final answer
    x = 1,036,909.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.