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Finding the Fourth Proportional to 702,895.20, 969,974.64 and 396,984.12

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Solution

The fourth proportional to 702,895.20, 969,974.64 and 396,984.12 is: 547,826.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,895.20 : 969,974.64 = 396,984.12 : x
  2. Step 2: Convert to fraction form
    702,895.20/969,974.64 = 396,984.12/x
  3. Step 3: Cross multiply
    702,895.20x = 969,974.64 × 396,984.12
  4. Step 4: Simplify right side
    702,895.20x = 385,064,528,882.72
  5. Step 5: Solve for x
    x = 385,064,528,882.72/702,895.20
  6. Step 6: Final answer
    x = 547,826.37

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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.