Home / 465,856.20-698,784.30-387,124.20

Finding the Fourth Proportional to 465,856.20, 698,784.30 and 387,124.20

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Solution

The fourth proportional to 465,856.20, 698,784.30 and 387,124.20 is: 580,686.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,856.20 : 698,784.30 = 387,124.20 : x
  2. Step 2: Convert to fraction form
    465,856.20/698,784.30 = 387,124.20/x
  3. Step 3: Cross multiply
    465,856.20x = 698,784.30 × 387,124.20
  4. Step 4: Simplify right side
    465,856.20x = 270,516,313,110.06
  5. Step 5: Solve for x
    x = 270,516,313,110.06/465,856.20
  6. Step 6: Final answer
    x = 580,686.30

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Similar ratio
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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.