Home / 1,565,696.85-2,160,625.07-921,158.55

Finding the Fourth Proportional to 1,565,696.85, 2,160,625.07 and 921,158.55

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Solution

The fourth proportional to 1,565,696.85, 2,160,625.07 and 921,158.55 is: 1,271,177.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565,696.85 : 2,160,625.07 = 921,158.55 : x
  2. Step 2: Convert to fraction form
    1,565,696.85/2,160,625.07 = 921,158.55/x
  3. Step 3: Cross multiply
    1,565,696.85x = 2,160,625.07 × 921,158.55
  4. Step 4: Simplify right side
    1,565,696.85x = 1,990,278,251,969.06
  5. Step 5: Solve for x
    x = 1,990,278,251,969.06/1,565,696.85
  6. Step 6: Final answer
    x = 1,271,177.27

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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.