Home / 724,627.20-1,086,940.80-457,521.60

Finding the Fourth Proportional to 724,627.20, 1,086,940.80 and 457,521.60

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Solution

The fourth proportional to 724,627.20, 1,086,940.80 and 457,521.60 is: 686,282.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,627.20 : 1,086,940.80 = 457,521.60 : x
  2. Step 2: Convert to fraction form
    724,627.20/1,086,940.80 = 457,521.60/x
  3. Step 3: Cross multiply
    724,627.20x = 1,086,940.80 × 457,521.60
  4. Step 4: Simplify right side
    724,627.20x = 497,298,893,921.28
  5. Step 5: Solve for x
    x = 497,298,893,921.28/724,627.20
  6. Step 6: Final answer
    x = 686,282.40

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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.