Home / 1,280,278.68-1,766,819.64-707,355.12

Finding the Fourth Proportional to 1,280,278.68, 1,766,819.64 and 707,355.12

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Solution

The fourth proportional to 1,280,278.68, 1,766,819.64 and 707,355.12 is: 976,169.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,278.68 : 1,766,819.64 = 707,355.12 : x
  2. Step 2: Convert to fraction form
    1,280,278.68/1,766,819.64 = 707,355.12/x
  3. Step 3: Cross multiply
    1,280,278.68x = 1,766,819.64 × 707,355.12
  4. Step 4: Simplify right side
    1,280,278.68x = 1,249,768,918,470.56
  5. Step 5: Solve for x
    x = 1,249,768,918,470.56/1,280,278.68
  6. Step 6: Final answer
    x = 976,169.44

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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.