Home / 781,413.60-1,172,509.20-444,712.80

Finding the Fourth Proportional to 781,413.60, 1,172,509.20 and 444,712.80

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Solution

The fourth proportional to 781,413.60, 1,172,509.20 and 444,712.80 is: 667,290.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,413.60 : 1,172,509.20 = 444,712.80 : x
  2. Step 2: Convert to fraction form
    781,413.60/1,172,509.20 = 444,712.80/x
  3. Step 3: Cross multiply
    781,413.60x = 1,172,509.20 × 444,712.80
  4. Step 4: Simplify right side
    781,413.60x = 521,429,849,357.76
  5. Step 5: Solve for x
    x = 521,429,849,357.76/781,413.60
  6. Step 6: Final answer
    x = 667,290.47

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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.