Home / 513,834.42-709,092.10-287,480.10

Finding the Fourth Proportional to 513,834.42, 709,092.10 and 287,480.10

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Solution

The fourth proportional to 513,834.42, 709,092.10 and 287,480.10 is: 396,722.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,834.42 : 709,092.10 = 287,480.10 : x
  2. Step 2: Convert to fraction form
    513,834.42/709,092.10 = 287,480.10/x
  3. Step 3: Cross multiply
    513,834.42x = 709,092.10 × 287,480.10
  4. Step 4: Simplify right side
    513,834.42x = 203,849,867,817.21
  5. Step 5: Solve for x
    x = 203,849,867,817.21/513,834.42
  6. Step 6: Final answer
    x = 396,722.87

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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.