Home / 998,765,720.40-1,498,409,854.20-385,369,957.20

Finding the Fourth Proportional to 998,765,720.40, 1,498,409,854.20 and 385,369,957.20

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Solution

The fourth proportional to 998,765,720.40, 1,498,409,854.20 and 385,369,957.20 is: 578,155,747.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,765,720.40 : 1,498,409,854.20 = 385,369,957.20 : x
  2. Step 2: Convert to fraction form
    998,765,720.40/1,498,409,854.20 = 385,369,957.20/x
  3. Step 3: Cross multiply
    998,765,720.40x = 1,498,409,854.20 × 385,369,957.20
  4. Step 4: Simplify right side
    998,765,720.40x = 577,442,141,381,112,192
  5. Step 5: Solve for x
    x = 577,442,141,381,112,192/998,765,720.40
  6. Step 6: Final answer
    x = 578,155,747.23

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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.