Home / 513,632.05-708,377.30-309,638.26

Finding the Fourth Proportional to 513,632.05, 708,377.30 and 309,638.26

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Solution

The fourth proportional to 513,632.05, 708,377.30 and 309,638.26 is: 427,038.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,632.05 : 708,377.30 = 309,638.26 : x
  2. Step 2: Convert to fraction form
    513,632.05/708,377.30 = 309,638.26/x
  3. Step 3: Cross multiply
    513,632.05x = 708,377.30 × 309,638.26
  4. Step 4: Simplify right side
    513,632.05x = 219,340,714,595.50
  5. Step 5: Solve for x
    x = 219,340,714,595.50/513,632.05
  6. Step 6: Final answer
    x = 427,038.61

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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.