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Finding the Fourth Proportional to 666,063.27, 918,047.93 and 504,866.79

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Solution

The fourth proportional to 666,063.27, 918,047.93 and 504,866.79 is: 695,867.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,063.27 : 918,047.93 = 504,866.79 : x
  2. Step 2: Convert to fraction form
    666,063.27/918,047.93 = 504,866.79/x
  3. Step 3: Cross multiply
    666,063.27x = 918,047.93 × 504,866.79
  4. Step 4: Simplify right side
    666,063.27x = 463,491,908,960.91
  5. Step 5: Solve for x
    x = 463,491,908,960.91/666,063.27
  6. Step 6: Final answer
    x = 695,867.69

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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.