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Finding the Fourth Proportional to 617,461.92, 927,743.22 and 392,920.20

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Solution

The fourth proportional to 617,461.92, 927,743.22 and 392,920.20 is: 590,366.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,461.92 : 927,743.22 = 392,920.20 : x
  2. Step 2: Convert to fraction form
    617,461.92/927,743.22 = 392,920.20/x
  3. Step 3: Cross multiply
    617,461.92x = 927,743.22 × 392,920.20
  4. Step 4: Simplify right side
    617,461.92x = 364,529,051,551.04
  5. Step 5: Solve for x
    x = 364,529,051,551.04/617,461.92
  6. Step 6: Final answer
    x = 590,366.85

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1.5x scale

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.