Home / 724,725.20-1,086,569.40-325,038.80

Finding the Fourth Proportional to 724,725.20, 1,086,569.40 and 325,038.80

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Solution

The fourth proportional to 724,725.20, 1,086,569.40 and 325,038.80 is: 487,325.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,725.20 : 1,086,569.40 = 325,038.80 : x
  2. Step 2: Convert to fraction form
    724,725.20/1,086,569.40 = 325,038.80/x
  3. Step 3: Cross multiply
    724,725.20x = 1,086,569.40 × 325,038.80
  4. Step 4: Simplify right side
    724,725.20x = 353,177,213,892.72
  5. Step 5: Solve for x
    x = 353,177,213,892.72/724,725.20
  6. Step 6: Final answer
    x = 487,325.70

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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.