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Finding the Fourth Proportional to 810,888.18, 1,119,049.06 and 448,335.46

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Solution

The fourth proportional to 810,888.18, 1,119,049.06 and 448,335.46 is: 618,715.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,888.18 : 1,119,049.06 = 448,335.46 : x
  2. Step 2: Convert to fraction form
    810,888.18/1,119,049.06 = 448,335.46/x
  3. Step 3: Cross multiply
    810,888.18x = 1,119,049.06 × 448,335.46
  4. Step 4: Simplify right side
    810,888.18x = 501,709,375,077.67
  5. Step 5: Solve for x
    x = 501,709,375,077.67/810,888.18
  6. Step 6: Final answer
    x = 618,715.86

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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.