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Finding the Fourth Proportional to 660,374.40, 987,937.20 and 572,602.80

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Solution

The fourth proportional to 660,374.40, 987,937.20 and 572,602.80 is: 856,628.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,374.40 : 987,937.20 = 572,602.80 : x
  2. Step 2: Convert to fraction form
    660,374.40/987,937.20 = 572,602.80/x
  3. Step 3: Cross multiply
    660,374.40x = 987,937.20 × 572,602.80
  4. Step 4: Simplify right side
    660,374.40x = 565,695,606,944.16
  5. Step 5: Solve for x
    x = 565,695,606,944.16/660,374.40
  6. Step 6: Final answer
    x = 856,628.61

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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.