Home / 640,960,067.10-961,440,100.65-447,090,390.30

Finding the Fourth Proportional to 640,960,067.10, 961,440,100.65 and 447,090,390.30

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Solution

The fourth proportional to 640,960,067.10, 961,440,100.65 and 447,090,390.30 is: 670,635,585.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,960,067.10 : 961,440,100.65 = 447,090,390.30 : x
  2. Step 2: Convert to fraction form
    640,960,067.10/961,440,100.65 = 447,090,390.30/x
  3. Step 3: Cross multiply
    640,960,067.10x = 961,440,100.65 × 447,090,390.30
  4. Step 4: Simplify right side
    640,960,067.10x = 429,850,629,849,679,808
  5. Step 5: Solve for x
    x = 429,850,629,849,679,808/640,960,067.10
  6. Step 6: Final answer
    x = 670,635,585.45

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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.