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Finding the Fourth Proportional to 528,692.58, 729,608.70 and 286,974.54

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Solution

The fourth proportional to 528,692.58, 729,608.70 and 286,974.54 is: 396,031.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,692.58 : 729,608.70 = 286,974.54 : x
  2. Step 2: Convert to fraction form
    528,692.58/729,608.70 = 286,974.54/x
  3. Step 3: Cross multiply
    528,692.58x = 729,608.70 × 286,974.54
  4. Step 4: Simplify right side
    528,692.58x = 209,379,121,062.50
  5. Step 5: Solve for x
    x = 209,379,121,062.50/528,692.58
  6. Step 6: Final answer
    x = 396,031.89

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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.