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Finding the Fourth Proportional to 612,891,010.80, 919,336,516.20 and 367,524,701.10

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Solution

The fourth proportional to 612,891,010.80, 919,336,516.20 and 367,524,701.10 is: 551,287,051.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,891,010.80 : 919,336,516.20 = 367,524,701.10 : x
  2. Step 2: Convert to fraction form
    612,891,010.80/919,336,516.20 = 367,524,701.10/x
  3. Step 3: Cross multiply
    612,891,010.80x = 919,336,516.20 × 367,524,701.10
  4. Step 4: Simplify right side
    612,891,010.80x = 337,878,878,326,720,320
  5. Step 5: Solve for x
    x = 337,878,878,326,720,320/612,891,010.80
  6. Step 6: Final answer
    x = 551,287,051.65

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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.