Home / 807,413.20-1,209,370.20-667,445.20

Finding the Fourth Proportional to 807,413.20, 1,209,370.20 and 667,445.20

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Solution

The fourth proportional to 807,413.20, 1,209,370.20 and 667,445.20 is: 999,721.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,413.20 : 1,209,370.20 = 667,445.20 : x
  2. Step 2: Convert to fraction form
    807,413.20/1,209,370.20 = 667,445.20/x
  3. Step 3: Cross multiply
    807,413.20x = 1,209,370.20 × 667,445.20
  4. Step 4: Simplify right side
    807,413.20x = 807,188,335,013.04
  5. Step 5: Solve for x
    x = 807,188,335,013.04/807,413.20
  6. Step 6: Final answer
    x = 999,721.50

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1.5x scale

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.