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Finding the Fourth Proportional to 492,088.40, 738,132.60 and 487,422.80

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Solution

The fourth proportional to 492,088.40, 738,132.60 and 487,422.80 is: 731,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,088.40 : 738,132.60 = 487,422.80 : x
  2. Step 2: Convert to fraction form
    492,088.40/738,132.60 = 487,422.80/x
  3. Step 3: Cross multiply
    492,088.40x = 738,132.60 × 487,422.80
  4. Step 4: Simplify right side
    492,088.40x = 359,782,658,663.28
  5. Step 5: Solve for x
    x = 359,782,658,663.28/492,088.40
  6. Step 6: Final answer
    x = 731,134.20

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1.5x scale

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.