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Finding the Fourth Proportional to 679,957,317.20, 1,019,935,975.80 and 220,225,422.80

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Solution

The fourth proportional to 679,957,317.20, 1,019,935,975.80 and 220,225,422.80 is: 330,338,134.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    679,957,317.20 : 1,019,935,975.80 = 220,225,422.80 : x
  2. Step 2: Convert to fraction form
    679,957,317.20/1,019,935,975.80 = 220,225,422.80/x
  3. Step 3: Cross multiply
    679,957,317.20x = 1,019,935,975.80 × 220,225,422.80
  4. Step 4: Simplify right side
    679,957,317.20x = 224,615,831,499,485,568
  5. Step 5: Solve for x
    x = 224,615,831,499,485,568/679,957,317.20
  6. Step 6: Final answer
    x = 330,338,134.20

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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.