Home / 1,290,665.60-1,935,998.40-1,155,363.20

Finding the Fourth Proportional to 1,290,665.60, 1,935,998.40 and 1,155,363.20

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Solution

The fourth proportional to 1,290,665.60, 1,935,998.40 and 1,155,363.20 is: 1,733,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,665.60 : 1,935,998.40 = 1,155,363.20 : x
  2. Step 2: Convert to fraction form
    1,290,665.60/1,935,998.40 = 1,155,363.20/x
  3. Step 3: Cross multiply
    1,290,665.60x = 1,935,998.40 × 1,155,363.20
  4. Step 4: Simplify right side
    1,290,665.60x = 2,236,781,306,618.88
  5. Step 5: Solve for x
    x = 2,236,781,306,618.88/1,290,665.60
  6. Step 6: Final answer
    x = 1,733,044.80

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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.