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Finding the Fourth Proportional to 528,338.76, 729,625.40 and 365,412.73

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Solution

The fourth proportional to 528,338.76, 729,625.40 and 365,412.73 is: 504,627.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,338.76 : 729,625.40 = 365,412.73 : x
  2. Step 2: Convert to fraction form
    528,338.76/729,625.40 = 365,412.73/x
  3. Step 3: Cross multiply
    528,338.76x = 729,625.40 × 365,412.73
  4. Step 4: Simplify right side
    528,338.76x = 266,614,410,689.25
  5. Step 5: Solve for x
    x = 266,614,410,689.25/528,338.76
  6. Step 6: Final answer
    x = 504,627.77

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Double scale
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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.