Home / 998,326.80-1,497,708.90-399,137.40

Finding the Fourth Proportional to 998,326.80, 1,497,708.90 and 399,137.40

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Solution

The fourth proportional to 998,326.80, 1,497,708.90 and 399,137.40 is: 598,793.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,326.80 : 1,497,708.90 = 399,137.40 : x
  2. Step 2: Convert to fraction form
    998,326.80/1,497,708.90 = 399,137.40/x
  3. Step 3: Cross multiply
    998,326.80x = 1,497,708.90 × 399,137.40
  4. Step 4: Simplify right side
    998,326.80x = 597,791,636,302.86
  5. Step 5: Solve for x
    x = 597,791,636,302.86/998,326.80
  6. Step 6: Final answer
    x = 598,793.54

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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.