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Finding the Fourth Proportional to 561,287.03, 845,720.78 and 463,635.05

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Solution

The fourth proportional to 561,287.03, 845,720.78 and 463,635.05 is: 698,583.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,287.03 : 845,720.78 = 463,635.05 : x
  2. Step 2: Convert to fraction form
    561,287.03/845,720.78 = 463,635.05/x
  3. Step 3: Cross multiply
    561,287.03x = 845,720.78 × 463,635.05
  4. Step 4: Simplify right side
    561,287.03x = 392,105,789,574.56
  5. Step 5: Solve for x
    x = 392,105,789,574.56/561,287.03
  6. Step 6: Final answer
    x = 698,583.38

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.