Home / 811,979.52-1,219,363.20-498,278.40

Finding the Fourth Proportional to 811,979.52, 1,219,363.20 and 498,278.40

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Solution

The fourth proportional to 811,979.52, 1,219,363.20 and 498,278.40 is: 748,272.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,979.52 : 1,219,363.20 = 498,278.40 : x
  2. Step 2: Convert to fraction form
    811,979.52/1,219,363.20 = 498,278.40/x
  3. Step 3: Cross multiply
    811,979.52x = 1,219,363.20 × 498,278.40
  4. Step 4: Simplify right side
    811,979.52x = 607,582,344,314.88
  5. Step 5: Solve for x
    x = 607,582,344,314.88/811,979.52
  6. Step 6: Final answer
    x = 748,272.99

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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.