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Finding the Fourth Proportional to 398,894,987.07, 599,250,499.11 and 288,570,949.11

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Solution

The fourth proportional to 398,894,987.07, 599,250,499.11 and 288,570,949.11 is: 433,513,307.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,894,987.07 : 599,250,499.11 = 288,570,949.11 : x
  2. Step 2: Convert to fraction form
    398,894,987.07/599,250,499.11 = 288,570,949.11/x
  3. Step 3: Cross multiply
    398,894,987.07x = 599,250,499.11 × 288,570,949.11
  4. Step 4: Simplify right side
    398,894,987.07x = 172,926,285,282,813,920
  5. Step 5: Solve for x
    x = 172,926,285,282,813,920/398,894,987.07
  6. Step 6: Final answer
    x = 433,513,307.73

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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.