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Finding the Fourth Proportional to 556,413.20, 835,494.60 and 320,217.20

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Solution

The fourth proportional to 556,413.20, 835,494.60 and 320,217.20 is: 480,829.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,413.20 : 835,494.60 = 320,217.20 : x
  2. Step 2: Convert to fraction form
    556,413.20/835,494.60 = 320,217.20/x
  3. Step 3: Cross multiply
    556,413.20x = 835,494.60 × 320,217.20
  4. Step 4: Simplify right side
    556,413.20x = 267,539,741,427.12
  5. Step 5: Solve for x
    x = 267,539,741,427.12/556,413.20
  6. Step 6: Final answer
    x = 480,829.25

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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.