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Finding the Fourth Proportional to 819,656.70, 1,229,657.85 and 346,098.30

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Solution

The fourth proportional to 819,656.70, 1,229,657.85 and 346,098.30 is: 519,220.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,656.70 : 1,229,657.85 = 346,098.30 : x
  2. Step 2: Convert to fraction form
    819,656.70/1,229,657.85 = 346,098.30/x
  3. Step 3: Cross multiply
    819,656.70x = 1,229,657.85 × 346,098.30
  4. Step 4: Simplify right side
    819,656.70x = 425,582,491,466.66
  5. Step 5: Solve for x
    x = 425,582,491,466.66/819,656.70
  6. Step 6: Final answer
    x = 519,220.41

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1.5x scale

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.