Home / 442,025,319.40-661,762,520.70-391,006,983.40

Finding the Fourth Proportional to 442,025,319.40, 661,762,520.70 and 391,006,983.40

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Solution

The fourth proportional to 442,025,319.40, 661,762,520.70 and 391,006,983.40 is: 585,382,229.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,025,319.40 : 661,762,520.70 = 391,006,983.40 : x
  2. Step 2: Convert to fraction form
    442,025,319.40/661,762,520.70 = 391,006,983.40/x
  3. Step 3: Cross multiply
    442,025,319.40x = 661,762,520.70 × 391,006,983.40
  4. Step 4: Simplify right side
    442,025,319.40x = 258,753,766,946,087,072
  5. Step 5: Solve for x
    x = 258,753,766,946,087,072/442,025,319.40
  6. Step 6: Final answer
    x = 585,382,229.46

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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.