Home / 1,120,769.60-1,681,154.40-921,315.20

Finding the Fourth Proportional to 1,120,769.60, 1,681,154.40 and 921,315.20

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Solution

The fourth proportional to 1,120,769.60, 1,681,154.40 and 921,315.20 is: 1,381,972.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,120,769.60 : 1,681,154.40 = 921,315.20 : x
  2. Step 2: Convert to fraction form
    1,120,769.60/1,681,154.40 = 921,315.20/x
  3. Step 3: Cross multiply
    1,120,769.60x = 1,681,154.40 × 921,315.20
  4. Step 4: Simplify right side
    1,120,769.60x = 1,548,873,102,266.88
  5. Step 5: Solve for x
    x = 1,548,873,102,266.88/1,120,769.60
  6. Step 6: Final answer
    x = 1,381,972.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.