Home / 1,821,123.57-2,513,135.11-1,005,309.74

Finding the Fourth Proportional to 1,821,123.57, 2,513,135.11 and 1,005,309.74

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Solution

The fourth proportional to 1,821,123.57, 2,513,135.11 and 1,005,309.74 is: 1,387,318.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,821,123.57 : 2,513,135.11 = 1,005,309.74 : x
  2. Step 2: Convert to fraction form
    1,821,123.57/2,513,135.11 = 1,005,309.74/x
  3. Step 3: Cross multiply
    1,821,123.57x = 2,513,135.11 × 1,005,309.74
  4. Step 4: Simplify right side
    1,821,123.57x = 2,526,479,196,244.34
  5. Step 5: Solve for x
    x = 2,526,479,196,244.34/1,821,123.57
  6. Step 6: Final answer
    x = 1,387,318.93

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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.