Home / 649,540,825.60-974,311,238.40-511,791,318.40

Finding the Fourth Proportional to 649,540,825.60, 974,311,238.40 and 511,791,318.40

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Solution

The fourth proportional to 649,540,825.60, 974,311,238.40 and 511,791,318.40 is: 767,686,977.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,540,825.60 : 974,311,238.40 = 511,791,318.40 : x
  2. Step 2: Convert to fraction form
    649,540,825.60/974,311,238.40 = 511,791,318.40/x
  3. Step 3: Cross multiply
    649,540,825.60x = 974,311,238.40 × 511,791,318.40
  4. Step 4: Simplify right side
    649,540,825.60x = 498,644,033,232,672,640
  5. Step 5: Solve for x
    x = 498,644,033,232,672,640/649,540,825.60
  6. Step 6: Final answer
    x = 767,686,977.60

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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.