Home / 1,565,686.40-2,160,610.61-921,148.07

Finding the Fourth Proportional to 1,565,686.40, 2,160,610.61 and 921,148.07

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Solution

The fourth proportional to 1,565,686.40, 2,160,610.61 and 921,148.07 is: 1,271,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565,686.40 : 2,160,610.61 = 921,148.07 : x
  2. Step 2: Convert to fraction form
    1,565,686.40/2,160,610.61 = 921,148.07/x
  3. Step 3: Cross multiply
    1,565,686.40x = 2,160,610.61 × 921,148.07
  4. Step 4: Simplify right side
    1,565,686.40x = 1,990,242,278,014.23
  5. Step 5: Solve for x
    x = 1,990,242,278,014.23/1,565,686.40
  6. Step 6: Final answer
    x = 1,271,162.78

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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.