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Finding the Fourth Proportional to 660,492.40, 988,114.20 and 572,720.80

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Solution

The fourth proportional to 660,492.40, 988,114.20 and 572,720.80 is: 856,805.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,492.40 : 988,114.20 = 572,720.80 : x
  2. Step 2: Convert to fraction form
    660,492.40/988,114.20 = 572,720.80/x
  3. Step 3: Cross multiply
    660,492.40x = 988,114.20 × 572,720.80
  4. Step 4: Simplify right side
    660,492.40x = 565,913,555,115.36
  5. Step 5: Solve for x
    x = 565,913,555,115.36/660,492.40
  6. Step 6: Final answer
    x = 856,805.55

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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.