Home / 908,109.66-1,253,145.02-500,202.72

Finding the Fourth Proportional to 908,109.66, 1,253,145.02 and 500,202.72

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Solution

The fourth proportional to 908,109.66, 1,253,145.02 and 500,202.72 is: 690,254.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    908,109.66 : 1,253,145.02 = 500,202.72 : x
  2. Step 2: Convert to fraction form
    908,109.66/1,253,145.02 = 500,202.72/x
  3. Step 3: Cross multiply
    908,109.66x = 1,253,145.02 × 500,202.72
  4. Step 4: Simplify right side
    908,109.66x = 626,826,545,057.44
  5. Step 5: Solve for x
    x = 626,826,545,057.44/908,109.66
  6. Step 6: Final answer
    x = 690,254.24

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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.