Home / 497,436.30-686,983.11-342,789.69

Finding the Fourth Proportional to 497,436.30, 686,983.11 and 342,789.69

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Solution

The fourth proportional to 497,436.30, 686,983.11 and 342,789.69 is: 473,408.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,436.30 : 686,983.11 = 342,789.69 : x
  2. Step 2: Convert to fraction form
    497,436.30/686,983.11 = 342,789.69/x
  3. Step 3: Cross multiply
    497,436.30x = 686,983.11 × 342,789.69
  4. Step 4: Simplify right side
    497,436.30x = 235,490,727,312.14
  5. Step 5: Solve for x
    x = 235,490,727,312.14/497,436.30
  6. Step 6: Final answer
    x = 473,408.81

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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.