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Finding the Fourth Proportional to 578,667.09, 867,173.49 and 325,416

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Solution

The fourth proportional to 578,667.09, 867,173.49 and 325,416 is: 487,658.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,667.09 : 867,173.49 = 325,416 : x
  2. Step 2: Convert to fraction form
    578,667.09/867,173.49 = 325,416/x
  3. Step 3: Cross multiply
    578,667.09x = 867,173.49 × 325,416
  4. Step 4: Simplify right side
    578,667.09x = 282,192,128,421.84
  5. Step 5: Solve for x
    x = 282,192,128,421.84/578,667.09
  6. Step 6: Final answer
    x = 487,658.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.