Home / 908,035.40-1,253,097.33-500,138.72

Finding the Fourth Proportional to 908,035.40, 1,253,097.33 and 500,138.72

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Solution

The fourth proportional to 908,035.40, 1,253,097.33 and 500,138.72 is: 690,196.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,035.40 : 1,253,097.33 = 500,138.72 : x
  2. Step 2: Convert to fraction form
    908,035.40/1,253,097.33 = 500,138.72/x
  3. Step 3: Cross multiply
    908,035.40x = 1,253,097.33 × 500,138.72
  4. Step 4: Simplify right side
    908,035.40x = 626,722,488,396.13
  5. Step 5: Solve for x
    x = 626,722,488,396.13/908,035.40
  6. Step 6: Final answer
    x = 690,196.10

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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.