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Finding the Fourth Proportional to 528,165.15, 728,019.05 and 413,245.59

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Solution

The fourth proportional to 528,165.15, 728,019.05 and 413,245.59 is: 569,614.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,165.15 : 728,019.05 = 413,245.59 : x
  2. Step 2: Convert to fraction form
    528,165.15/728,019.05 = 413,245.59/x
  3. Step 3: Cross multiply
    528,165.15x = 728,019.05 × 413,245.59
  4. Step 4: Simplify right side
    528,165.15x = 300,850,661,848.49
  5. Step 5: Solve for x
    x = 300,850,661,848.49/528,165.15
  6. Step 6: Final answer
    x = 569,614.75

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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.