Home / 998,085.60-1,497,128.40-399,139.20

Finding the Fourth Proportional to 998,085.60, 1,497,128.40 and 399,139.20

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Solution

The fourth proportional to 998,085.60, 1,497,128.40 and 399,139.20 is: 598,708.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,085.60 : 1,497,128.40 = 399,139.20 : x
  2. Step 2: Convert to fraction form
    998,085.60/1,497,128.40 = 399,139.20/x
  3. Step 3: Cross multiply
    998,085.60x = 1,497,128.40 × 399,139.20
  4. Step 4: Simplify right side
    998,085.60x = 597,562,631,873.28
  5. Step 5: Solve for x
    x = 597,562,631,873.28/998,085.60
  6. Step 6: Final answer
    x = 598,708.80

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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.