Home / 838,512.81-1,157,122.38-465,974.46

Finding the Fourth Proportional to 838,512.81, 1,157,122.38 and 465,974.46

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Solution

The fourth proportional to 838,512.81, 1,157,122.38 and 465,974.46 is: 643,030.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,512.81 : 1,157,122.38 = 465,974.46 : x
  2. Step 2: Convert to fraction form
    838,512.81/1,157,122.38 = 465,974.46/x
  3. Step 3: Cross multiply
    838,512.81x = 1,157,122.38 × 465,974.46
  4. Step 4: Simplify right side
    838,512.81x = 539,189,476,174.42
  5. Step 5: Solve for x
    x = 539,189,476,174.42/838,512.81
  6. Step 6: Final answer
    x = 643,030.70

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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.