Home / 640,040,404.60-960,060,606.90-478,797,268.60

Finding the Fourth Proportional to 640,040,404.60, 960,060,606.90 and 478,797,268.60

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Solution

The fourth proportional to 640,040,404.60, 960,060,606.90 and 478,797,268.60 is: 718,195,902.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,040,404.60 : 960,060,606.90 = 478,797,268.60 : x
  2. Step 2: Convert to fraction form
    640,040,404.60/960,060,606.90 = 478,797,268.60/x
  3. Step 3: Cross multiply
    640,040,404.60x = 960,060,606.90 × 478,797,268.60
  4. Step 4: Simplify right side
    640,040,404.60x = 459,674,396,274,178,304
  5. Step 5: Solve for x
    x = 459,674,396,274,178,304/640,040,404.60
  6. Step 6: Final answer
    x = 718,195,902.90

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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.