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Finding the Fourth Proportional to 1,010,585, 1,394,610 and 557,876

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Solution

The fourth proportional to 1,010,585, 1,394,610 and 557,876 is: 769,870.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,010,585 : 1,394,610 = 557,876 : x
  2. Step 2: Convert to fraction form
    1,010,585/1,394,610 = 557,876/x
  3. Step 3: Cross multiply
    1,010,585x = 1,394,610 × 557,876
  4. Step 4: Simplify right side
    1,010,585x = 778,019,448,360
  5. Step 5: Solve for x
    x = 778,019,448,360/1,010,585
  6. Step 6: Final answer
    x = 769,870.37

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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.