Home / 640,040,403.60-960,060,605.40-478,797,267.60

Finding the Fourth Proportional to 640,040,403.60, 960,060,605.40 and 478,797,267.60

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Solution

The fourth proportional to 640,040,403.60, 960,060,605.40 and 478,797,267.60 is: 718,195,901.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,040,403.60 : 960,060,605.40 = 478,797,267.60 : x
  2. Step 2: Convert to fraction form
    640,040,403.60/960,060,605.40 = 478,797,267.60/x
  3. Step 3: Cross multiply
    640,040,403.60x = 960,060,605.40 × 478,797,267.60
  4. Step 4: Simplify right side
    640,040,403.60x = 459,674,394,595,921,792
  5. Step 5: Solve for x
    x = 459,674,394,595,921,792/640,040,403.60
  6. Step 6: Final answer
    x = 718,195,901.40

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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.