Home / 1,107,440.40-1,660,123.80-867,421.20

Finding the Fourth Proportional to 1,107,440.40, 1,660,123.80 and 867,421.20

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Solution

The fourth proportional to 1,107,440.40, 1,660,123.80 and 867,421.20 is: 1,300,319.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,440.40 : 1,660,123.80 = 867,421.20 : x
  2. Step 2: Convert to fraction form
    1,107,440.40/1,660,123.80 = 867,421.20/x
  3. Step 3: Cross multiply
    1,107,440.40x = 1,660,123.80 × 867,421.20
  4. Step 4: Simplify right side
    1,107,440.40x = 1,440,026,578,744.56
  5. Step 5: Solve for x
    x = 1,440,026,578,744.56/1,107,440.40
  6. Step 6: Final answer
    x = 1,300,319.71

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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.