Home / 542,570,811.20-813,856,216.80-517,628,513.60

Finding the Fourth Proportional to 542,570,811.20, 813,856,216.80 and 517,628,513.60

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Solution

The fourth proportional to 542,570,811.20, 813,856,216.80 and 517,628,513.60 is: 776,442,770.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,570,811.20 : 813,856,216.80 = 517,628,513.60 : x
  2. Step 2: Convert to fraction form
    542,570,811.20/813,856,216.80 = 517,628,513.60/x
  3. Step 3: Cross multiply
    542,570,811.20x = 813,856,216.80 × 517,628,513.60
  4. Step 4: Simplify right side
    542,570,811.20x = 421,275,183,786,303,360
  5. Step 5: Solve for x
    x = 421,275,183,786,303,360/542,570,811.20
  6. Step 6: Final answer
    x = 776,442,770.40

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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.