Home / 640,060,331.10-960,090,496.65-442,789,431.90

Finding the Fourth Proportional to 640,060,331.10, 960,090,496.65 and 442,789,431.90

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Solution

The fourth proportional to 640,060,331.10, 960,090,496.65 and 442,789,431.90 is: 664,184,147.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,060,331.10 : 960,090,496.65 = 442,789,431.90 : x
  2. Step 2: Convert to fraction form
    640,060,331.10/960,090,496.65 = 442,789,431.90/x
  3. Step 3: Cross multiply
    640,060,331.10x = 960,090,496.65 × 442,789,431.90
  4. Step 4: Simplify right side
    640,060,331.10x = 425,117,925,584,242,304
  5. Step 5: Solve for x
    x = 425,117,925,584,242,304/640,060,331.10
  6. Step 6: Final answer
    x = 664,184,147.85

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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.