Home / 907,287.18-1,252,046.40-499,380.28

Finding the Fourth Proportional to 907,287.18, 1,252,046.40 and 499,380.28

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Solution

The fourth proportional to 907,287.18, 1,252,046.40 and 499,380.28 is: 689,139.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,287.18 : 1,252,046.40 = 499,380.28 : x
  2. Step 2: Convert to fraction form
    907,287.18/1,252,046.40 = 499,380.28/x
  3. Step 3: Cross multiply
    907,287.18x = 1,252,046.40 × 499,380.28
  4. Step 4: Simplify right side
    907,287.18x = 625,247,281,804.99
  5. Step 5: Solve for x
    x = 625,247,281,804.99/907,287.18
  6. Step 6: Final answer
    x = 689,139.33

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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.