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Finding the Fourth Proportional to 611,423.64, 917,394.80 and 327,040.13

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Solution

The fourth proportional to 611,423.64, 917,394.80 and 327,040.13 is: 490,698.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,423.64 : 917,394.80 = 327,040.13 : x
  2. Step 2: Convert to fraction form
    611,423.64/917,394.80 = 327,040.13/x
  3. Step 3: Cross multiply
    611,423.64x = 917,394.80 × 327,040.13
  4. Step 4: Simplify right side
    611,423.64x = 300,024,915,311.61
  5. Step 5: Solve for x
    x = 300,024,915,311.61/611,423.64
  6. Step 6: Final answer
    x = 490,698.91

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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.