Home / 728,916.84-1,005,902.46-406,626.68

Finding the Fourth Proportional to 728,916.84, 1,005,902.46 and 406,626.68

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Solution

The fourth proportional to 728,916.84, 1,005,902.46 and 406,626.68 is: 561,143.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,916.84 : 1,005,902.46 = 406,626.68 : x
  2. Step 2: Convert to fraction form
    728,916.84/1,005,902.46 = 406,626.68/x
  3. Step 3: Cross multiply
    728,916.84x = 1,005,902.46 × 406,626.68
  4. Step 4: Simplify right side
    728,916.84x = 409,026,770,650.99
  5. Step 5: Solve for x
    x = 409,026,770,650.99/728,916.84
  6. Step 6: Final answer
    x = 561,143.26

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1.5x scale

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.