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Finding the Fourth Proportional to 666,570.06, 918,909.81 and 475,251.30

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Solution

The fourth proportional to 666,570.06, 918,909.81 and 475,251.30 is: 655,164.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,570.06 : 918,909.81 = 475,251.30 : x
  2. Step 2: Convert to fraction form
    666,570.06/918,909.81 = 475,251.30/x
  3. Step 3: Cross multiply
    666,570.06x = 918,909.81 × 475,251.30
  4. Step 4: Simplify right side
    666,570.06x = 436,713,081,785.25
  5. Step 5: Solve for x
    x = 436,713,081,785.25/666,570.06
  6. Step 6: Final answer
    x = 655,164.56

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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.