Home / 1,565,950.78-2,160,909.75-921,246.40

Finding the Fourth Proportional to 1,565,950.78, 2,160,909.75 and 921,246.40

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Solution

The fourth proportional to 1,565,950.78, 2,160,909.75 and 921,246.40 is: 1,271,259.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,565,950.78 : 2,160,909.75 = 921,246.40 : x
  2. Step 2: Convert to fraction form
    1,565,950.78/2,160,909.75 = 921,246.40/x
  3. Step 3: Cross multiply
    1,565,950.78x = 2,160,909.75 × 921,246.40
  4. Step 4: Simplify right side
    1,565,950.78x = 1,990,730,327,912.40
  5. Step 5: Solve for x
    x = 1,990,730,327,912.40/1,565,950.78
  6. Step 6: Final answer
    x = 1,271,259.83

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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.