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Finding the Fourth Proportional to 782,133.76, 1,079,345.28 and 424,437.76

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Solution

The fourth proportional to 782,133.76, 1,079,345.28 and 424,437.76 is: 585,724.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,133.76 : 1,079,345.28 = 424,437.76 : x
  2. Step 2: Convert to fraction form
    782,133.76/1,079,345.28 = 424,437.76/x
  3. Step 3: Cross multiply
    782,133.76x = 1,079,345.28 × 424,437.76
  4. Step 4: Simplify right side
    782,133.76x = 458,114,892,909.77
  5. Step 5: Solve for x
    x = 458,114,892,909.77/782,133.76
  6. Step 6: Final answer
    x = 585,724.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.