Home / 1,512,381.40-2,087,233.40-1,129,743.88

Finding the Fourth Proportional to 1,512,381.40, 2,087,233.40 and 1,129,743.88

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Solution

The fourth proportional to 1,512,381.40, 2,087,233.40 and 1,129,743.88 is: 1,559,156.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,512,381.40 : 2,087,233.40 = 1,129,743.88 : x
  2. Step 2: Convert to fraction form
    1,512,381.40/2,087,233.40 = 1,129,743.88/x
  3. Step 3: Cross multiply
    1,512,381.40x = 2,087,233.40 × 1,129,743.88
  4. Step 4: Simplify right side
    1,512,381.40x = 2,358,039,159,781.59
  5. Step 5: Solve for x
    x = 2,358,039,159,781.59/1,512,381.40
  6. Step 6: Final answer
    x = 1,559,156.41

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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.