Home / 431,137,973.40-646,706,960.10-124,440,091.80

Finding the Fourth Proportional to 431,137,973.40, 646,706,960.10 and 124,440,091.80

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Solution

The fourth proportional to 431,137,973.40, 646,706,960.10 and 124,440,091.80 is: 186,660,137.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,137,973.40 : 646,706,960.10 = 124,440,091.80 : x
  2. Step 2: Convert to fraction form
    431,137,973.40/646,706,960.10 = 124,440,091.80/x
  3. Step 3: Cross multiply
    431,137,973.40x = 646,706,960.10 × 124,440,091.80
  4. Step 4: Simplify right side
    431,137,973.40x = 80,476,273,482,542,944
  5. Step 5: Solve for x
    x = 80,476,273,482,542,944/431,137,973.40
  6. Step 6: Final answer
    x = 186,660,137.70

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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.