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Finding the Fourth Proportional to 819,654.20, 1,229,654.10 and 346,095.80

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Solution

The fourth proportional to 819,654.20, 1,229,654.10 and 346,095.80 is: 519,216.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,654.20 : 1,229,654.10 = 346,095.80 : x
  2. Step 2: Convert to fraction form
    819,654.20/1,229,654.10 = 346,095.80/x
  3. Step 3: Cross multiply
    819,654.20x = 1,229,654.10 × 346,095.80
  4. Step 4: Simplify right side
    819,654.20x = 425,578,119,462.78
  5. Step 5: Solve for x
    x = 425,578,119,462.78/819,654.20
  6. Step 6: Final answer
    x = 519,216.66

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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.