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Finding the Fourth Proportional to 660,276.90, 987,790.95 and 572,505.30

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Solution

The fourth proportional to 660,276.90, 987,790.95 and 572,505.30 is: 856,482.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,276.90 : 987,790.95 = 572,505.30 : x
  2. Step 2: Convert to fraction form
    660,276.90/987,790.95 = 572,505.30/x
  3. Step 3: Cross multiply
    660,276.90x = 987,790.95 × 572,505.30
  4. Step 4: Simplify right side
    660,276.90x = 565,515,554,167.04
  5. Step 5: Solve for x
    x = 565,515,554,167.04/660,276.90
  6. Step 6: Final answer
    x = 856,482.42

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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.