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Finding the Fourth Proportional to 585,213.78, 807,660.72 and 330,581.34

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Solution

The fourth proportional to 585,213.78, 807,660.72 and 330,581.34 is: 456,239.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    585,213.78 : 807,660.72 = 330,581.34 : x
  2. Step 2: Convert to fraction form
    585,213.78/807,660.72 = 330,581.34/x
  3. Step 3: Cross multiply
    585,213.78x = 807,660.72 × 330,581.34
  4. Step 4: Simplify right side
    585,213.78x = 266,997,563,082.97
  5. Step 5: Solve for x
    x = 266,997,563,082.97/585,213.78
  6. Step 6: Final answer
    x = 456,239.36

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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.