Home / 513,835.29-771,635.03-315,321.30

Finding the Fourth Proportional to 513,835.29, 771,635.03 and 315,321.30

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Solution

The fourth proportional to 513,835.29, 771,635.03 and 315,321.30 is: 473,523.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,835.29 : 771,635.03 = 315,321.30 : x
  2. Step 2: Convert to fraction form
    513,835.29/771,635.03 = 315,321.30/x
  3. Step 3: Cross multiply
    513,835.29x = 771,635.03 × 315,321.30
  4. Step 4: Simplify right side
    513,835.29x = 243,312,959,208.53
  5. Step 5: Solve for x
    x = 243,312,959,208.53/513,835.29
  6. Step 6: Final answer
    x = 473,523.26

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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.