Home / 480,743.80-721,115.70-404,636.20

Finding the Fourth Proportional to 480,743.80, 721,115.70 and 404,636.20

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Solution

The fourth proportional to 480,743.80, 721,115.70 and 404,636.20 is: 606,954.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,743.80 : 721,115.70 = 404,636.20 : x
  2. Step 2: Convert to fraction form
    480,743.80/721,115.70 = 404,636.20/x
  3. Step 3: Cross multiply
    480,743.80x = 721,115.70 × 404,636.20
  4. Step 4: Simplify right side
    480,743.80x = 291,789,516,608.34
  5. Step 5: Solve for x
    x = 291,789,516,608.34/480,743.80
  6. Step 6: Final answer
    x = 606,954.30

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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.