Home / 992,133.92-1,369,820.98-665,936.18

Finding the Fourth Proportional to 992,133.92, 1,369,820.98 and 665,936.18

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Solution

The fourth proportional to 992,133.92, 1,369,820.98 and 665,936.18 is: 919,445.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,133.92 : 1,369,820.98 = 665,936.18 : x
  2. Step 2: Convert to fraction form
    992,133.92/1,369,820.98 = 665,936.18/x
  3. Step 3: Cross multiply
    992,133.92x = 1,369,820.98 × 665,936.18
  4. Step 4: Simplify right side
    992,133.92x = 912,213,350,705.06
  5. Step 5: Solve for x
    x = 912,213,350,705.06/992,133.92
  6. Step 6: Final answer
    x = 919,445.78

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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.