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Finding the Fourth Proportional to 616,147.90, 922,666.65 and 404,640.70

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Solution

The fourth proportional to 616,147.90, 922,666.65 and 404,640.70 is: 605,939.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,147.90 : 922,666.65 = 404,640.70 : x
  2. Step 2: Convert to fraction form
    616,147.90/922,666.65 = 404,640.70/x
  3. Step 3: Cross multiply
    616,147.90x = 922,666.65 × 404,640.70
  4. Step 4: Simplify right side
    616,147.90x = 373,348,479,122.66
  5. Step 5: Solve for x
    x = 373,348,479,122.66/616,147.90
  6. Step 6: Final answer
    x = 605,939.71

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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.