Home / 891,875.75-1,338,017.94-386,521.61

Finding the Fourth Proportional to 891,875.75, 1,338,017.94 and 386,521.61

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Solution

The fourth proportional to 891,875.75, 1,338,017.94 and 386,521.61 is: 579,870.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,875.75 : 1,338,017.94 = 386,521.61 : x
  2. Step 2: Convert to fraction form
    891,875.75/1,338,017.94 = 386,521.61/x
  3. Step 3: Cross multiply
    891,875.75x = 1,338,017.94 × 386,521.61
  4. Step 4: Simplify right side
    891,875.75x = 517,172,841,687.59
  5. Step 5: Solve for x
    x = 517,172,841,687.59/891,875.75
  6. Step 6: Final answer
    x = 579,870.96

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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.