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Finding the Fourth Proportional to 482,705.75, 666,256.32 and 329,805.70

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Solution

The fourth proportional to 482,705.75, 666,256.32 and 329,805.70 is: 455,215.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,705.75 : 666,256.32 = 329,805.70 : x
  2. Step 2: Convert to fraction form
    482,705.75/666,256.32 = 329,805.70/x
  3. Step 3: Cross multiply
    482,705.75x = 666,256.32 × 329,805.70
  4. Step 4: Simplify right side
    482,705.75x = 219,735,130,331.38
  5. Step 5: Solve for x
    x = 219,735,130,331.38/482,705.75
  6. Step 6: Final answer
    x = 455,215.48

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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.