Home / 1,288,729.32-1,778,397.03-715,806.06

Finding the Fourth Proportional to 1,288,729.32, 1,778,397.03 and 715,806.06

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Solution

The fourth proportional to 1,288,729.32, 1,778,397.03 and 715,806.06 is: 987,784.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,729.32 : 1,778,397.03 = 715,806.06 : x
  2. Step 2: Convert to fraction form
    1,288,729.32/1,778,397.03 = 715,806.06/x
  3. Step 3: Cross multiply
    1,288,729.32x = 1,778,397.03 × 715,806.06
  4. Step 4: Simplify right side
    1,288,729.32x = 1,272,987,371,160.00
  5. Step 5: Solve for x
    x = 1,272,987,371,160.00/1,288,729.32
  6. Step 6: Final answer
    x = 987,784.91

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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.