Home / 1,287,708.71-1,776,677.09-804,764.43

Finding the Fourth Proportional to 1,287,708.71, 1,776,677.09 and 804,764.43

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Solution

The fourth proportional to 1,287,708.71, 1,776,677.09 and 804,764.43 is: 1,110,349.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,708.71 : 1,776,677.09 = 804,764.43 : x
  2. Step 2: Convert to fraction form
    1,287,708.71/1,776,677.09 = 804,764.43/x
  3. Step 3: Cross multiply
    1,287,708.71x = 1,776,677.09 × 804,764.43
  4. Step 4: Simplify right side
    1,287,708.71x = 1,429,806,521,604.09
  5. Step 5: Solve for x
    x = 1,429,806,521,604.09/1,287,708.71
  6. Step 6: Final answer
    x = 1,110,349.35

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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.