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Finding the Fourth Proportional to 777,988.80, 1,167,009.12 and 216,976.32

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Solution

The fourth proportional to 777,988.80, 1,167,009.12 and 216,976.32 is: 325,471.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,988.80 : 1,167,009.12 = 216,976.32 : x
  2. Step 2: Convert to fraction form
    777,988.80/1,167,009.12 = 216,976.32/x
  3. Step 3: Cross multiply
    777,988.80x = 1,167,009.12 × 216,976.32
  4. Step 4: Simplify right side
    777,988.80x = 253,213,344,264.04
  5. Step 5: Solve for x
    x = 253,213,344,264.04/777,988.80
  6. Step 6: Final answer
    x = 325,471.71

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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.