Home / 727,808.20-1,091,712.30-328,640.20

Finding the Fourth Proportional to 727,808.20, 1,091,712.30 and 328,640.20

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Solution

The fourth proportional to 727,808.20, 1,091,712.30 and 328,640.20 is: 492,960.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,808.20 : 1,091,712.30 = 328,640.20 : x
  2. Step 2: Convert to fraction form
    727,808.20/1,091,712.30 = 328,640.20/x
  3. Step 3: Cross multiply
    727,808.20x = 1,091,712.30 × 328,640.20
  4. Step 4: Simplify right side
    727,808.20x = 358,780,548,614.46
  5. Step 5: Solve for x
    x = 358,780,548,614.46/727,808.20
  6. Step 6: Final answer
    x = 492,960.30

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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.