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Finding the Fourth Proportional to 656,586.40, 985,657.20 and 372,503.20

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Solution

The fourth proportional to 656,586.40, 985,657.20 and 372,503.20 is: 559,195.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,586.40 : 985,657.20 = 372,503.20 : x
  2. Step 2: Convert to fraction form
    656,586.40/985,657.20 = 372,503.20/x
  3. Step 3: Cross multiply
    656,586.40x = 985,657.20 × 372,503.20
  4. Step 4: Simplify right side
    656,586.40x = 367,160,461,103.04
  5. Step 5: Solve for x
    x = 367,160,461,103.04/656,586.40
  6. Step 6: Final answer
    x = 559,195.96

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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.