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Finding the Fourth Proportional to 1,921,262.52, 2,881,789.89 and 974,608.65

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Solution

The fourth proportional to 1,921,262.52, 2,881,789.89 and 974,608.65 is: 1,461,860.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921,262.52 : 2,881,789.89 = 974,608.65 : x
  2. Step 2: Convert to fraction form
    1,921,262.52/2,881,789.89 = 974,608.65/x
  3. Step 3: Cross multiply
    1,921,262.52x = 2,881,789.89 × 974,608.65
  4. Step 4: Simplify right side
    1,921,262.52x = 2,808,617,354,276.55
  5. Step 5: Solve for x
    x = 2,808,617,354,276.55/1,921,262.52
  6. Step 6: Final answer
    x = 1,461,860.27

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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.