Home / 992,133.91-1,369,820.97-665,936.17

Finding the Fourth Proportional to 992,133.91, 1,369,820.97 and 665,936.17

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Solution

The fourth proportional to 992,133.91, 1,369,820.97 and 665,936.17 is: 919,445.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    992,133.91 : 1,369,820.97 = 665,936.17 : x
  2. Step 2: Convert to fraction form
    992,133.91/1,369,820.97 = 665,936.17/x
  3. Step 3: Cross multiply
    992,133.91x = 1,369,820.97 × 665,936.17
  4. Step 4: Simplify right side
    992,133.91x = 912,213,330,347.49
  5. Step 5: Solve for x
    x = 912,213,330,347.49/992,133.91
  6. Step 6: Final answer
    x = 919,445.77

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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.