Home / 1,929,770.32-2,891,001.78-1,288,139.38

Finding the Fourth Proportional to 1,929,770.32, 2,891,001.78 and 1,288,139.38

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Solution

The fourth proportional to 1,929,770.32, 2,891,001.78 and 1,288,139.38 is: 1,929,770.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,929,770.32 : 2,891,001.78 = 1,288,139.38 : x
  2. Step 2: Convert to fraction form
    1,929,770.32/2,891,001.78 = 1,288,139.38/x
  3. Step 3: Cross multiply
    1,929,770.32x = 2,891,001.78 × 1,288,139.38
  4. Step 4: Simplify right side
    1,929,770.32x = 3,724,013,240,468.10
  5. Step 5: Solve for x
    x = 3,724,013,240,468.10/1,929,770.32
  6. Step 6: Final answer
    x = 1,929,770.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.