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Finding the Fourth Proportional to 528,692.72, 729,596.60 and 286,975.16

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Solution

The fourth proportional to 528,692.72, 729,596.60 and 286,975.16 is: 396,026.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,692.72 : 729,596.60 = 286,975.16 : x
  2. Step 2: Convert to fraction form
    528,692.72/729,596.60 = 286,975.16/x
  3. Step 3: Cross multiply
    528,692.72x = 729,596.60 × 286,975.16
  4. Step 4: Simplify right side
    528,692.72x = 209,376,101,020.46
  5. Step 5: Solve for x
    x = 209,376,101,020.46/528,692.72
  6. Step 6: Final answer
    x = 396,026.07

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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.