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Finding the Fourth Proportional to 578,751.40, 867,608.70 and 379,167.40

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Solution

The fourth proportional to 578,751.40, 867,608.70 and 379,167.40 is: 568,411.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,751.40 : 867,608.70 = 379,167.40 : x
  2. Step 2: Convert to fraction form
    578,751.40/867,608.70 = 379,167.40/x
  3. Step 3: Cross multiply
    578,751.40x = 867,608.70 × 379,167.40
  4. Step 4: Simplify right side
    578,751.40x = 328,968,934,996.38
  5. Step 5: Solve for x
    x = 328,968,934,996.38/578,751.40
  6. Step 6: Final answer
    x = 568,411.47

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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.