Home / 813,947,992.80-1,220,921,989.20-504,011,601.60

Finding the Fourth Proportional to 813,947,992.80, 1,220,921,989.20 and 504,011,601.60

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Solution

The fourth proportional to 813,947,992.80, 1,220,921,989.20 and 504,011,601.60 is: 756,017,402.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,947,992.80 : 1,220,921,989.20 = 504,011,601.60 : x
  2. Step 2: Convert to fraction form
    813,947,992.80/1,220,921,989.20 = 504,011,601.60/x
  3. Step 3: Cross multiply
    813,947,992.80x = 1,220,921,989.20 × 504,011,601.60
  4. Step 4: Simplify right side
    813,947,992.80x = 615,358,847,205,350,016
  5. Step 5: Solve for x
    x = 615,358,847,205,350,016/813,947,992.80
  6. Step 6: Final answer
    x = 756,017,402.40

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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.