Home / 728,374.85-1,005,161.51-406,105.01

Finding the Fourth Proportional to 728,374.85, 1,005,161.51 and 406,105.01

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Solution

The fourth proportional to 728,374.85, 1,005,161.51 and 406,105.01 is: 560,427.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,374.85 : 1,005,161.51 = 406,105.01 : x
  2. Step 2: Convert to fraction form
    728,374.85/1,005,161.51 = 406,105.01/x
  3. Step 3: Cross multiply
    728,374.85x = 1,005,161.51 × 406,105.01
  4. Step 4: Simplify right side
    728,374.85x = 408,201,123,039.64
  5. Step 5: Solve for x
    x = 408,201,123,039.64/728,374.85
  6. Step 6: Final answer
    x = 560,427.26

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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.