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Finding the Fourth Proportional to 752,328, 1,038,212.64 and 412,818.12

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Solution

The fourth proportional to 752,328, 1,038,212.64 and 412,818.12 is: 569,689.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    752,328 : 1,038,212.64 = 412,818.12 : x
  2. Step 2: Convert to fraction form
    752,328/1,038,212.64 = 412,818.12/x
  3. Step 3: Cross multiply
    752,328x = 1,038,212.64 × 412,818.12
  4. Step 4: Simplify right side
    752,328x = 428,592,990,205.04
  5. Step 5: Solve for x
    x = 428,592,990,205.04/752,328
  6. Step 6: Final answer
    x = 569,689.01

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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.