Home / 1,280,357.74-1,766,964.54-707,385.61

Finding the Fourth Proportional to 1,280,357.74, 1,766,964.54 and 707,385.61

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Solution

The fourth proportional to 1,280,357.74, 1,766,964.54 and 707,385.61 is: 976,231.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,280,357.74 : 1,766,964.54 = 707,385.61 : x
  2. Step 2: Convert to fraction form
    1,280,357.74/1,766,964.54 = 707,385.61/x
  3. Step 3: Cross multiply
    1,280,357.74x = 1,766,964.54 × 707,385.61
  4. Step 4: Simplify right side
    1,280,357.74x = 1,249,925,288,976.27
  5. Step 5: Solve for x
    x = 1,249,925,288,976.27/1,280,357.74
  6. Step 6: Final answer
    x = 976,231.29

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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.