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Finding the Fourth Proportional to 561,331.44, 775,457.01 and 485,748.72

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Solution

The fourth proportional to 561,331.44, 775,457.01 and 485,748.72 is: 671,042.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,331.44 : 775,457.01 = 485,748.72 : x
  2. Step 2: Convert to fraction form
    561,331.44/775,457.01 = 485,748.72/x
  3. Step 3: Cross multiply
    561,331.44x = 775,457.01 × 485,748.72
  4. Step 4: Simplify right side
    561,331.44x = 376,677,250,022.53
  5. Step 5: Solve for x
    x = 376,677,250,022.53/561,331.44
  6. Step 6: Final answer
    x = 671,042.50

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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.