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Finding the Fourth Proportional to 528,549.72, 729,399.08 and 286,832.30

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Solution

The fourth proportional to 528,549.72, 729,399.08 and 286,832.30 is: 395,828.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,549.72 : 729,399.08 = 286,832.30 : x
  2. Step 2: Convert to fraction form
    528,549.72/729,399.08 = 286,832.30/x
  3. Step 3: Cross multiply
    528,549.72x = 729,399.08 × 286,832.30
  4. Step 4: Simplify right side
    528,549.72x = 209,215,215,734.28
  5. Step 5: Solve for x
    x = 209,215,215,734.28/528,549.72
  6. Step 6: Final answer
    x = 395,828.83

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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.