Home / 740,728.25-1,022,287.94-418,459.11

Finding the Fourth Proportional to 740,728.25, 1,022,287.94 and 418,459.11

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Solution

The fourth proportional to 740,728.25, 1,022,287.94 and 418,459.11 is: 577,520.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    740,728.25 : 1,022,287.94 = 418,459.11 : x
  2. Step 2: Convert to fraction form
    740,728.25/1,022,287.94 = 418,459.11/x
  3. Step 3: Cross multiply
    740,728.25x = 1,022,287.94 × 418,459.11
  4. Step 4: Simplify right side
    740,728.25x = 427,785,699,533.31
  5. Step 5: Solve for x
    x = 427,785,699,533.31/740,728.25
  6. Step 6: Final answer
    x = 577,520.43

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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.