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Finding the Fourth Proportional to 666,422.88, 918,707.02 and 475,104.12

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Solution

The fourth proportional to 666,422.88, 918,707.02 and 475,104.12 is: 654,961.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,422.88 : 918,707.02 = 475,104.12 : x
  2. Step 2: Convert to fraction form
    666,422.88/918,707.02 = 475,104.12/x
  3. Step 3: Cross multiply
    666,422.88x = 918,707.02 × 475,104.12
  4. Step 4: Simplify right side
    666,422.88x = 436,481,490,274.92
  5. Step 5: Solve for x
    x = 436,481,490,274.92/666,422.88
  6. Step 6: Final answer
    x = 654,961.74

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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.