Home / 717,956.87-990,787.25-395,678.57

Finding the Fourth Proportional to 717,956.87, 990,787.25 and 395,678.57

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Solution

The fourth proportional to 717,956.87, 990,787.25 and 395,678.57 is: 546,040.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,956.87 : 990,787.25 = 395,678.57 : x
  2. Step 2: Convert to fraction form
    717,956.87/990,787.25 = 395,678.57/x
  3. Step 3: Cross multiply
    717,956.87x = 990,787.25 × 395,678.57
  4. Step 4: Simplify right side
    717,956.87x = 392,033,280,275.84
  5. Step 5: Solve for x
    x = 392,033,280,275.84/717,956.87
  6. Step 6: Final answer
    x = 546,040.15

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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.