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Finding the Fourth Proportional to 997,120.48, 1,375,978.44 and 567,360.40

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Solution

The fourth proportional to 997,120.48, 1,375,978.44 and 567,360.40 is: 782,930.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    997,120.48 : 1,375,978.44 = 567,360.40 : x
  2. Step 2: Convert to fraction form
    997,120.48/1,375,978.44 = 567,360.40/x
  3. Step 3: Cross multiply
    997,120.48x = 1,375,978.44 × 567,360.40
  4. Step 4: Simplify right side
    997,120.48x = 780,675,678,109.78
  5. Step 5: Solve for x
    x = 780,675,678,109.78/997,120.48
  6. Step 6: Final answer
    x = 782,930.14

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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.