Home / 907,721.13-1,252,664.43-499,860.90

Finding the Fourth Proportional to 907,721.13, 1,252,664.43 and 499,860.90

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Solution

The fourth proportional to 907,721.13, 1,252,664.43 and 499,860.90 is: 689,813.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,721.13 : 1,252,664.43 = 499,860.90 : x
  2. Step 2: Convert to fraction form
    907,721.13/1,252,664.43 = 499,860.90/x
  3. Step 3: Cross multiply
    907,721.13x = 1,252,664.43 × 499,860.90
  4. Step 4: Simplify right side
    907,721.13x = 626,157,969,377.79
  5. Step 5: Solve for x
    x = 626,157,969,377.79/907,721.13
  6. Step 6: Final answer
    x = 689,813.15

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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.