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Finding the Fourth Proportional to 655,219.80, 982,862.10 and 340,291.80

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Solution

The fourth proportional to 655,219.80, 982,862.10 and 340,291.80 is: 510,454.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,219.80 : 982,862.10 = 340,291.80 : x
  2. Step 2: Convert to fraction form
    655,219.80/982,862.10 = 340,291.80/x
  3. Step 3: Cross multiply
    655,219.80x = 982,862.10 × 340,291.80
  4. Step 4: Simplify right side
    655,219.80x = 334,459,913,160.78
  5. Step 5: Solve for x
    x = 334,459,913,160.78/655,219.80
  6. Step 6: Final answer
    x = 510,454.53

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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.