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Finding the Fourth Proportional to 528,363, 729,140.94 and 302,013.36

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Solution

The fourth proportional to 528,363, 729,140.94 and 302,013.36 is: 416,778.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,363 : 729,140.94 = 302,013.36 : x
  2. Step 2: Convert to fraction form
    528,363/729,140.94 = 302,013.36/x
  3. Step 3: Cross multiply
    528,363x = 729,140.94 × 302,013.36
  4. Step 4: Simplify right side
    528,363x = 220,210,305,202.96
  5. Step 5: Solve for x
    x = 220,210,305,202.96/528,363
  6. Step 6: Final answer
    x = 416,778.44

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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.