Home / 498,127.68-687,431.88-283,254.12

Finding the Fourth Proportional to 498,127.68, 687,431.88 and 283,254.12

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Solution

The fourth proportional to 498,127.68, 687,431.88 and 283,254.12 is: 390,899.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,127.68 : 687,431.88 = 283,254.12 : x
  2. Step 2: Convert to fraction form
    498,127.68/687,431.88 = 283,254.12/x
  3. Step 3: Cross multiply
    498,127.68x = 687,431.88 × 283,254.12
  4. Step 4: Simplify right side
    498,127.68x = 194,717,912,229.35
  5. Step 5: Solve for x
    x = 194,717,912,229.35/498,127.68
  6. Step 6: Final answer
    x = 390,899.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.