Home / 1,867,920.90-2,801,881.35-921,168.60

Finding the Fourth Proportional to 1,867,920.90, 2,801,881.35 and 921,168.60

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Solution

The fourth proportional to 1,867,920.90, 2,801,881.35 and 921,168.60 is: 1,381,752.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,867,920.90 : 2,801,881.35 = 921,168.60 : x
  2. Step 2: Convert to fraction form
    1,867,920.90/2,801,881.35 = 921,168.60/x
  3. Step 3: Cross multiply
    1,867,920.90x = 2,801,881.35 × 921,168.60
  4. Step 4: Simplify right side
    1,867,920.90x = 2,581,005,120,545.61
  5. Step 5: Solve for x
    x = 2,581,005,120,545.61/1,867,920.90
  6. Step 6: Final answer
    x = 1,381,752.90

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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.