Home / 641,304,042.80-961,956,064.20-278,506,986.80

Finding the Fourth Proportional to 641,304,042.80, 961,956,064.20 and 278,506,986.80

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Solution

The fourth proportional to 641,304,042.80, 961,956,064.20 and 278,506,986.80 is: 417,760,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,304,042.80 : 961,956,064.20 = 278,506,986.80 : x
  2. Step 2: Convert to fraction form
    641,304,042.80/961,956,064.20 = 278,506,986.80/x
  3. Step 3: Cross multiply
    641,304,042.80x = 961,956,064.20 × 278,506,986.80
  4. Step 4: Simplify right side
    641,304,042.80x = 267,911,484,874,329,376
  5. Step 5: Solve for x
    x = 267,911,484,874,329,376/641,304,042.80
  6. Step 6: Final answer
    x = 417,760,480.20

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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.