Home / 914,691.07-1,262,712.45-642,991.87

Finding the Fourth Proportional to 914,691.07, 1,262,712.45 and 642,991.87

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Solution

The fourth proportional to 914,691.07, 1,262,712.45 and 642,991.87 is: 887,637.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    914,691.07 : 1,262,712.45 = 642,991.87 : x
  2. Step 2: Convert to fraction form
    914,691.07/1,262,712.45 = 642,991.87/x
  3. Step 3: Cross multiply
    914,691.07x = 1,262,712.45 × 642,991.87
  4. Step 4: Simplify right side
    914,691.07x = 811,913,839,497.78
  5. Step 5: Solve for x
    x = 811,913,839,497.78/914,691.07
  6. Step 6: Final answer
    x = 887,637.22

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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.