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Finding the Fourth Proportional to 666,954.49, 918,456.41 and 579,700.48

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Solution

The fourth proportional to 666,954.49, 918,456.41 and 579,700.48 is: 798,299.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,954.49 : 918,456.41 = 579,700.48 : x
  2. Step 2: Convert to fraction form
    666,954.49/918,456.41 = 579,700.48/x
  3. Step 3: Cross multiply
    666,954.49x = 918,456.41 × 579,700.48
  4. Step 4: Simplify right side
    666,954.49x = 532,429,620,889.19
  5. Step 5: Solve for x
    x = 532,429,620,889.19/666,954.49
  6. Step 6: Final answer
    x = 798,299.78

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1.5x scale

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.