Home / 418,297,720.74-626,234,923.27-315,101,538.60

Finding the Fourth Proportional to 418,297,720.74, 626,234,923.27 and 315,101,538.60

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Solution

The fourth proportional to 418,297,720.74, 626,234,923.27 and 315,101,538.60 is: 471,739,572.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    418,297,720.74 : 626,234,923.27 = 315,101,538.60 : x
  2. Step 2: Convert to fraction form
    418,297,720.74/626,234,923.27 = 315,101,538.60/x
  3. Step 3: Cross multiply
    418,297,720.74x = 626,234,923.27 × 315,101,538.60
  4. Step 4: Simplify right side
    418,297,720.74x = 197,327,587,847,429,952
  5. Step 5: Solve for x
    x = 197,327,587,847,429,952/418,297,720.74
  6. Step 6: Final answer
    x = 471,739,572.23

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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.