Home / 831,718.16-1,147,769.68-469,140.88

Finding the Fourth Proportional to 831,718.16, 1,147,769.68 and 469,140.88

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Solution

The fourth proportional to 831,718.16, 1,147,769.68 and 469,140.88 is: 647,413.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,718.16 : 1,147,769.68 = 469,140.88 : x
  2. Step 2: Convert to fraction form
    831,718.16/1,147,769.68 = 469,140.88/x
  3. Step 3: Cross multiply
    831,718.16x = 1,147,769.68 × 469,140.88
  4. Step 4: Simplify right side
    831,718.16x = 538,465,677,712.52
  5. Step 5: Solve for x
    x = 538,465,677,712.52/831,718.16
  6. Step 6: Final answer
    x = 647,413.64

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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.