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Finding the Fourth Proportional to 911,787.96, 1,366,459.31 and 709,628.16

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Solution

The fourth proportional to 911,787.96, 1,366,459.31 and 709,628.16 is: 1,063,490.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,787.96 : 1,366,459.31 = 709,628.16 : x
  2. Step 2: Convert to fraction form
    911,787.96/1,366,459.31 = 709,628.16/x
  3. Step 3: Cross multiply
    911,787.96x = 1,366,459.31 × 709,628.16
  4. Step 4: Simplify right side
    911,787.96x = 969,678,005,870.17
  5. Step 5: Solve for x
    x = 969,678,005,870.17/911,787.96
  6. Step 6: Final answer
    x = 1,063,490.69

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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.