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Finding the Fourth Proportional to 665,226.54, 918,011.07 and 363,422.70

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Solution

The fourth proportional to 665,226.54, 918,011.07 and 363,422.70 is: 501,522.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,226.54 : 918,011.07 = 363,422.70 : x
  2. Step 2: Convert to fraction form
    665,226.54/918,011.07 = 363,422.70/x
  3. Step 3: Cross multiply
    665,226.54x = 918,011.07 × 363,422.70
  4. Step 4: Simplify right side
    665,226.54x = 333,626,061,689.29
  5. Step 5: Solve for x
    x = 333,626,061,689.29/665,226.54
  6. Step 6: Final answer
    x = 501,522.48

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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.