Home / 998,420.80-1,497,849.90-399,231.40

Finding the Fourth Proportional to 998,420.80, 1,497,849.90 and 399,231.40

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Solution

The fourth proportional to 998,420.80, 1,497,849.90 and 399,231.40 is: 598,934.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,420.80 : 1,497,849.90 = 399,231.40 : x
  2. Step 2: Convert to fraction form
    998,420.80/1,497,849.90 = 399,231.40/x
  3. Step 3: Cross multiply
    998,420.80x = 1,497,849.90 × 399,231.40
  4. Step 4: Simplify right side
    998,420.80x = 597,988,712,566.86
  5. Step 5: Solve for x
    x = 597,988,712,566.86/998,420.80
  6. Step 6: Final answer
    x = 598,934.55

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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.