Home / 813,413.60-1,220,120.40-655,949.60

Finding the Fourth Proportional to 813,413.60, 1,220,120.40 and 655,949.60

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Solution

The fourth proportional to 813,413.60, 1,220,120.40 and 655,949.60 is: 983,924.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,413.60 : 1,220,120.40 = 655,949.60 : x
  2. Step 2: Convert to fraction form
    813,413.60/1,220,120.40 = 655,949.60/x
  3. Step 3: Cross multiply
    813,413.60x = 1,220,120.40 × 655,949.60
  4. Step 4: Simplify right side
    813,413.60x = 800,337,488,331.84
  5. Step 5: Solve for x
    x = 800,337,488,331.84/813,413.60
  6. Step 6: Final answer
    x = 983,924.40

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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.