Home / 497,731.20-686,865.60-282,854.40

Finding the Fourth Proportional to 497,731.20, 686,865.60 and 282,854.40

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Solution

The fourth proportional to 497,731.20, 686,865.60 and 282,854.40 is: 390,337.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,731.20 : 686,865.60 = 282,854.40 : x
  2. Step 2: Convert to fraction form
    497,731.20/686,865.60 = 282,854.40/x
  3. Step 3: Cross multiply
    497,731.20x = 686,865.60 × 282,854.40
  4. Step 4: Simplify right side
    497,731.20x = 194,282,957,168.64
  5. Step 5: Solve for x
    x = 194,282,957,168.64/497,731.20
  6. Step 6: Final answer
    x = 390,337.11

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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.