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Finding the Fourth Proportional to 665,333.20, 918,159.78 and 363,527.20

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Solution

The fourth proportional to 665,333.20, 918,159.78 and 363,527.20 is: 501,667.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,333.20 : 918,159.78 = 363,527.20 : x
  2. Step 2: Convert to fraction form
    665,333.20/918,159.78 = 363,527.20/x
  3. Step 3: Cross multiply
    665,333.20x = 918,159.78 × 363,527.20
  4. Step 4: Simplify right side
    665,333.20x = 333,776,053,976.02
  5. Step 5: Solve for x
    x = 333,776,053,976.02/665,333.20
  6. Step 6: Final answer
    x = 501,667.52

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Double scale
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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.