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Finding the Fourth Proportional to 666,571.06, 918,911.19 and 475,252.30

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Solution

The fourth proportional to 666,571.06, 918,911.19 and 475,252.30 is: 655,165.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,571.06 : 918,911.19 = 475,252.30 : x
  2. Step 2: Convert to fraction form
    666,571.06/918,911.19 = 475,252.30/x
  3. Step 3: Cross multiply
    666,571.06x = 918,911.19 × 475,252.30
  4. Step 4: Simplify right side
    666,571.06x = 436,714,656,543.24
  5. Step 5: Solve for x
    x = 436,714,656,543.24/666,571.06
  6. Step 6: Final answer
    x = 655,165.94

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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.