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Finding the Fourth Proportional to 898,129.20, 1,347,712.20 and 337,220.40

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Solution

The fourth proportional to 898,129.20, 1,347,712.20 and 337,220.40 is: 506,025.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,129.20 : 1,347,712.20 = 337,220.40 : x
  2. Step 2: Convert to fraction form
    898,129.20/1,347,712.20 = 337,220.40/x
  3. Step 3: Cross multiply
    898,129.20x = 1,347,712.20 × 337,220.40
  4. Step 4: Simplify right side
    898,129.20x = 454,476,047,168.88
  5. Step 5: Solve for x
    x = 454,476,047,168.88/898,129.20
  6. Step 6: Final answer
    x = 506,025.24

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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.