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Finding the Fourth Proportional to 666,535.06, 918,861.51 and 475,216.30

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Solution

The fourth proportional to 666,535.06, 918,861.51 and 475,216.30 is: 655,116.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,535.06 : 918,861.51 = 475,216.30 : x
  2. Step 2: Convert to fraction form
    666,535.06/918,861.51 = 475,216.30/x
  3. Step 3: Cross multiply
    666,535.06x = 918,861.51 × 475,216.30
  4. Step 4: Simplify right side
    666,535.06x = 436,657,966,994.61
  5. Step 5: Solve for x
    x = 436,657,966,994.61/666,535.06
  6. Step 6: Final answer
    x = 655,116.28

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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.