Home / 1,565,715.90-2,160,651.33-921,177.57

Finding the Fourth Proportional to 1,565,715.90, 2,160,651.33 and 921,177.57

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Solution

The fourth proportional to 1,565,715.90, 2,160,651.33 and 921,177.57 is: 1,271,203.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565,715.90 : 2,160,651.33 = 921,177.57 : x
  2. Step 2: Convert to fraction form
    1,565,715.90/2,160,651.33 = 921,177.57/x
  3. Step 3: Cross multiply
    1,565,715.90x = 2,160,651.33 × 921,177.57
  4. Step 4: Simplify right side
    1,565,715.90x = 1,990,343,541,786.67
  5. Step 5: Solve for x
    x = 1,990,343,541,786.67/1,565,715.90
  6. Step 6: Final answer
    x = 1,271,203.51

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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.