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Finding the Fourth Proportional to 552,412.47, 762,321.70 and 310,694.98

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Solution

The fourth proportional to 552,412.47, 762,321.70 and 310,694.98 is: 428,754.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,412.47 : 762,321.70 = 310,694.98 : x
  2. Step 2: Convert to fraction form
    552,412.47/762,321.70 = 310,694.98/x
  3. Step 3: Cross multiply
    552,412.47x = 762,321.70 × 310,694.98
  4. Step 4: Simplify right side
    552,412.47x = 236,849,528,264.84
  5. Step 5: Solve for x
    x = 236,849,528,264.84/552,412.47
  6. Step 6: Final answer
    x = 428,754.85

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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.