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Finding the Fourth Proportional to 1,258,929.17, 1,888,951.91 and 659,747.87

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Solution

The fourth proportional to 1,258,929.17, 1,888,951.91 and 659,747.87 is: 989,914.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,258,929.17 : 1,888,951.91 = 659,747.87 : x
  2. Step 2: Convert to fraction form
    1,258,929.17/1,888,951.91 = 659,747.87/x
  3. Step 3: Cross multiply
    1,258,929.17x = 1,888,951.91 × 659,747.87
  4. Step 4: Simplify right side
    1,258,929.17x = 1,246,231,986,411.43
  5. Step 5: Solve for x
    x = 1,246,231,986,411.43/1,258,929.17
  6. Step 6: Final answer
    x = 989,914.30

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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.