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Finding the Fourth Proportional to 587,761.20, 880,864.20 and 520,887.60

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Solution

The fourth proportional to 587,761.20, 880,864.20 and 520,887.60 is: 780,642.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    587,761.20 : 880,864.20 = 520,887.60 : x
  2. Step 2: Convert to fraction form
    587,761.20/880,864.20 = 520,887.60/x
  3. Step 3: Cross multiply
    587,761.20x = 880,864.20 × 520,887.60
  4. Step 4: Simplify right side
    587,761.20x = 458,831,239,063.92
  5. Step 5: Solve for x
    x = 458,831,239,063.92/587,761.20
  6. Step 6: Final answer
    x = 780,642.27

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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.