Home / 728,640.42-1,090,686.20-536,731.20

Finding the Fourth Proportional to 728,640.42, 1,090,686.20 and 536,731.20

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Solution

The fourth proportional to 728,640.42, 1,090,686.20 and 536,731.20 is: 803,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,640.42 : 1,090,686.20 = 536,731.20 : x
  2. Step 2: Convert to fraction form
    728,640.42/1,090,686.20 = 536,731.20/x
  3. Step 3: Cross multiply
    728,640.42x = 1,090,686.20 × 536,731.20
  4. Step 4: Simplify right side
    728,640.42x = 585,405,312,949.44
  5. Step 5: Solve for x
    x = 585,405,312,949.44/728,640.42
  6. Step 6: Final answer
    x = 803,421.41

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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.