Home / 728,839.68-1,005,823.68-422,892.48

Finding the Fourth Proportional to 728,839.68, 1,005,823.68 and 422,892.48

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Solution

The fourth proportional to 728,839.68, 1,005,823.68 and 422,892.48 is: 583,606.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,839.68 : 1,005,823.68 = 422,892.48 : x
  2. Step 2: Convert to fraction form
    728,839.68/1,005,823.68 = 422,892.48/x
  3. Step 3: Cross multiply
    728,839.68x = 1,005,823.68 × 422,892.48
  4. Step 4: Simplify right side
    728,839.68x = 425,355,270,477.93
  5. Step 5: Solve for x
    x = 425,355,270,477.93/728,839.68
  6. Step 6: Final answer
    x = 583,606.08

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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.