Home / 442,025,321.40-661,762,523.70-391,006,985.40

Finding the Fourth Proportional to 442,025,321.40, 661,762,523.70 and 391,006,985.40

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Solution

The fourth proportional to 442,025,321.40, 661,762,523.70 and 391,006,985.40 is: 585,382,232.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,025,321.40 : 661,762,523.70 = 391,006,985.40 : x
  2. Step 2: Convert to fraction form
    442,025,321.40/661,762,523.70 = 391,006,985.40/x
  3. Step 3: Cross multiply
    442,025,321.40x = 661,762,523.70 × 391,006,985.40
  4. Step 4: Simplify right side
    442,025,321.40x = 258,753,769,442,633,056
  5. Step 5: Solve for x
    x = 258,753,769,442,633,056/442,025,321.40
  6. Step 6: Final answer
    x = 585,382,232.45

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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.