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Finding the Fourth Proportional to 528,209.60, 728,939.16 and 324,158.37

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Solution

The fourth proportional to 528,209.60, 728,939.16 and 324,158.37 is: 447,344.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,209.60 : 728,939.16 = 324,158.37 : x
  2. Step 2: Convert to fraction form
    528,209.60/728,939.16 = 324,158.37/x
  3. Step 3: Cross multiply
    528,209.60x = 728,939.16 × 324,158.37
  4. Step 4: Simplify right side
    528,209.60x = 236,291,729,934.77
  5. Step 5: Solve for x
    x = 236,291,729,934.77/528,209.60
  6. Step 6: Final answer
    x = 447,344.64

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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.