Home / 781,469,413.47-1,078,458,118.20-429,060,257.55

Finding the Fourth Proportional to 781,469,413.47, 1,078,458,118.20 and 429,060,257.55

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Solution

The fourth proportional to 781,469,413.47, 1,078,458,118.20 and 429,060,257.55 is: 592,119,806.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,469,413.47 : 1,078,458,118.20 = 429,060,257.55 : x
  2. Step 2: Convert to fraction form
    781,469,413.47/1,078,458,118.20 = 429,060,257.55/x
  3. Step 3: Cross multiply
    781,469,413.47x = 1,078,458,118.20 × 429,060,257.55
  4. Step 4: Simplify right side
    781,469,413.47x = 462,723,517,951,780,352
  5. Step 5: Solve for x
    x = 462,723,517,951,780,352/781,469,413.47
  6. Step 6: Final answer
    x = 592,119,806.58

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Double scale
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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.