Home / 497,071.12-686,019.92-282,280.20

Finding the Fourth Proportional to 497,071.12, 686,019.92 and 282,280.20

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Solution

The fourth proportional to 497,071.12, 686,019.92 and 282,280.20 is: 389,581.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,071.12 : 686,019.92 = 282,280.20 : x
  2. Step 2: Convert to fraction form
    497,071.12/686,019.92 = 282,280.20/x
  3. Step 3: Cross multiply
    497,071.12x = 686,019.92 × 282,280.20
  4. Step 4: Simplify right side
    497,071.12x = 193,649,840,221.58
  5. Step 5: Solve for x
    x = 193,649,840,221.58/497,071.12
  6. Step 6: Final answer
    x = 389,581.76

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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.