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Finding the Fourth Proportional to 662,496.64, 914,176.70 and 372,140.80

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Solution

The fourth proportional to 662,496.64, 914,176.70 and 372,140.80 is: 513,515.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,496.64 : 914,176.70 = 372,140.80 : x
  2. Step 2: Convert to fraction form
    662,496.64/914,176.70 = 372,140.80/x
  3. Step 3: Cross multiply
    662,496.64x = 914,176.70 × 372,140.80
  4. Step 4: Simplify right side
    662,496.64x = 340,202,445,728.74
  5. Step 5: Solve for x
    x = 340,202,445,728.74/662,496.64
  6. Step 6: Final answer
    x = 513,515.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.