Home / 992,132.74-1,369,819.11-665,934.40

Finding the Fourth Proportional to 992,132.74, 1,369,819.11 and 665,934.40

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Solution

The fourth proportional to 992,132.74, 1,369,819.11 and 665,934.40 is: 919,443.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,132.74 : 1,369,819.11 = 665,934.40 : x
  2. Step 2: Convert to fraction form
    992,132.74/1,369,819.11 = 665,934.40/x
  3. Step 3: Cross multiply
    992,132.74x = 1,369,819.11 × 665,934.40
  4. Step 4: Simplify right side
    992,132.74x = 912,209,667,126.38
  5. Step 5: Solve for x
    x = 912,209,667,126.38/992,132.74
  6. Step 6: Final answer
    x = 919,443.17

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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.