Home / 485,914.02-729,081.53-261,012.05

Finding the Fourth Proportional to 485,914.02, 729,081.53 and 261,012.05

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Solution

The fourth proportional to 485,914.02, 729,081.53 and 261,012.05 is: 391,631.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,914.02 : 729,081.53 = 261,012.05 : x
  2. Step 2: Convert to fraction form
    485,914.02/729,081.53 = 261,012.05/x
  3. Step 3: Cross multiply
    485,914.02x = 729,081.53 × 261,012.05
  4. Step 4: Simplify right side
    485,914.02x = 190,299,064,762.44
  5. Step 5: Solve for x
    x = 190,299,064,762.44/485,914.02
  6. Step 6: Final answer
    x = 391,631.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.