Home / 1,565,687.40-2,160,611.98-921,149.07

Finding the Fourth Proportional to 1,565,687.40, 2,160,611.98 and 921,149.07

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Solution

The fourth proportional to 1,565,687.40, 2,160,611.98 and 921,149.07 is: 1,271,164.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565,687.40 : 2,160,611.98 = 921,149.07 : x
  2. Step 2: Convert to fraction form
    1,565,687.40/2,160,611.98 = 921,149.07/x
  3. Step 3: Cross multiply
    1,565,687.40x = 2,160,611.98 × 921,149.07
  4. Step 4: Simplify right side
    1,565,687.40x = 1,990,245,716,007.86
  5. Step 5: Solve for x
    x = 1,990,245,716,007.86/1,565,687.40
  6. Step 6: Final answer
    x = 1,271,164.16

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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.