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Finding the Fourth Proportional to 660,499.90, 988,125.45 and 572,728.30

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Solution

The fourth proportional to 660,499.90, 988,125.45 and 572,728.30 is: 856,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,499.90 : 988,125.45 = 572,728.30 : x
  2. Step 2: Convert to fraction form
    660,499.90/988,125.45 = 572,728.30/x
  3. Step 3: Cross multiply
    660,499.90x = 988,125.45 × 572,728.30
  4. Step 4: Simplify right side
    660,499.90x = 565,927,409,165.24
  5. Step 5: Solve for x
    x = 565,927,409,165.24/660,499.90
  6. Step 6: Final answer
    x = 856,816.80

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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.