Home / 431,137,979.40-646,706,969.10-124,440,097.80

Finding the Fourth Proportional to 431,137,979.40, 646,706,969.10 and 124,440,097.80

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Solution

The fourth proportional to 431,137,979.40, 646,706,969.10 and 124,440,097.80 is: 186,660,146.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,137,979.40 : 646,706,969.10 = 124,440,097.80 : x
  2. Step 2: Convert to fraction form
    431,137,979.40/646,706,969.10 = 124,440,097.80/x
  3. Step 3: Cross multiply
    431,137,979.40x = 646,706,969.10 × 124,440,097.80
  4. Step 4: Simplify right side
    431,137,979.40x = 80,476,278,482,745,584
  5. Step 5: Solve for x
    x = 80,476,278,482,745,584/431,137,979.40
  6. Step 6: Final answer
    x = 186,660,146.70

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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.