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Finding the Fourth Proportional to 666,537.06, 918,864.27 and 475,218.30

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Solution

The fourth proportional to 666,537.06, 918,864.27 and 475,218.30 is: 655,119.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,537.06 : 918,864.27 = 475,218.30 : x
  2. Step 2: Convert to fraction form
    666,537.06/918,864.27 = 475,218.30/x
  3. Step 3: Cross multiply
    666,537.06x = 918,864.27 × 475,218.30
  4. Step 4: Simplify right side
    666,537.06x = 436,661,116,320.14
  5. Step 5: Solve for x
    x = 436,661,116,320.14/666,537.06
  6. Step 6: Final answer
    x = 655,119.04

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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.