Home / 528,540.05-729,387.18-286,822.55

Finding the Fourth Proportional to 528,540.05, 729,387.18 and 286,822.55

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Solution

The fourth proportional to 528,540.05, 729,387.18 and 286,822.55 is: 395,816.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,540.05 : 729,387.18 = 286,822.55 : x
  2. Step 2: Convert to fraction form
    528,540.05/729,387.18 = 286,822.55/x
  3. Step 3: Cross multiply
    528,540.05x = 729,387.18 × 286,822.55
  4. Step 4: Simplify right side
    528,540.05x = 209,204,692,728.38
  5. Step 5: Solve for x
    x = 209,204,692,728.38/528,540.05
  6. Step 6: Final answer
    x = 395,816.16

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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.