Home / 998,420.10-1,377,819.45-545,711.10

Finding the Fourth Proportional to 998,420.10, 1,377,819.45 and 545,711.10

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Solution

The fourth proportional to 998,420.10, 1,377,819.45 and 545,711.10 is: 753,081.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,420.10 : 1,377,819.45 = 545,711.10 : x
  2. Step 2: Convert to fraction form
    998,420.10/1,377,819.45 = 545,711.10/x
  3. Step 3: Cross multiply
    998,420.10x = 1,377,819.45 × 545,711.10
  4. Step 4: Simplify right side
    998,420.10x = 751,891,367,660.90
  5. Step 5: Solve for x
    x = 751,891,367,660.90/998,420.10
  6. Step 6: Final answer
    x = 753,081.16

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1.5x scale

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.