Home / 1,278,419.40-1,917,629.10-745,666.20

Finding the Fourth Proportional to 1,278,419.40, 1,917,629.10 and 745,666.20

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Solution

The fourth proportional to 1,278,419.40, 1,917,629.10 and 745,666.20 is: 1,118,499.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,419.40 : 1,917,629.10 = 745,666.20 : x
  2. Step 2: Convert to fraction form
    1,278,419.40/1,917,629.10 = 745,666.20/x
  3. Step 3: Cross multiply
    1,278,419.40x = 1,917,629.10 × 745,666.20
  4. Step 4: Simplify right side
    1,278,419.40x = 1,429,911,204,006.42
  5. Step 5: Solve for x
    x = 1,429,911,204,006.42/1,278,419.40
  6. Step 6: Final answer
    x = 1,118,499.30

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Similar ratio
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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.