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Finding the Fourth Proportional to 870,589.48, 1,201,413.48 and 488,616.27

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Solution

The fourth proportional to 870,589.48, 1,201,413.48 and 488,616.27 is: 674,290.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,589.48 : 1,201,413.48 = 488,616.27 : x
  2. Step 2: Convert to fraction form
    870,589.48/1,201,413.48 = 488,616.27/x
  3. Step 3: Cross multiply
    870,589.48x = 1,201,413.48 × 488,616.27
  4. Step 4: Simplify right side
    870,589.48x = 587,030,173,325.32
  5. Step 5: Solve for x
    x = 587,030,173,325.32/870,589.48
  6. Step 6: Final answer
    x = 674,290.45

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1.5x scale

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.