Home / 1,129,400.39-1,558,568.01-645,964.85

Finding the Fourth Proportional to 1,129,400.39, 1,558,568.01 and 645,964.85

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Solution

The fourth proportional to 1,129,400.39, 1,558,568.01 and 645,964.85 is: 891,428.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,129,400.39 : 1,558,568.01 = 645,964.85 : x
  2. Step 2: Convert to fraction form
    1,129,400.39/1,558,568.01 = 645,964.85/x
  3. Step 3: Cross multiply
    1,129,400.39x = 1,558,568.01 × 645,964.85
  4. Step 4: Simplify right side
    1,129,400.39x = 1,006,780,157,113.24
  5. Step 5: Solve for x
    x = 1,006,780,157,113.24/1,129,400.39
  6. Step 6: Final answer
    x = 891,428.91

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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.