Home / 765,990.52-1,148,393.75-386,716.02

Finding the Fourth Proportional to 765,990.52, 1,148,393.75 and 386,716.02

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Solution

The fourth proportional to 765,990.52, 1,148,393.75 and 386,716.02 is: 579,775.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,990.52 : 1,148,393.75 = 386,716.02 : x
  2. Step 2: Convert to fraction form
    765,990.52/1,148,393.75 = 386,716.02/x
  3. Step 3: Cross multiply
    765,990.52x = 1,148,393.75 × 386,716.02
  4. Step 4: Simplify right side
    765,990.52x = 444,102,262,787.81
  5. Step 5: Solve for x
    x = 444,102,262,787.81/765,990.52
  6. Step 6: Final answer
    x = 579,775.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.