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Finding the Fourth Proportional to 1,294,558.74, 1,942,503.57 and 992,890.71

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Solution

The fourth proportional to 1,294,558.74, 1,942,503.57 and 992,890.71 is: 1,489,846.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,558.74 : 1,942,503.57 = 992,890.71 : x
  2. Step 2: Convert to fraction form
    1,294,558.74/1,942,503.57 = 992,890.71/x
  3. Step 3: Cross multiply
    1,294,558.74x = 1,942,503.57 × 992,890.71
  4. Step 4: Simplify right side
    1,294,558.74x = 1,928,693,748,794.83
  5. Step 5: Solve for x
    x = 1,928,693,748,794.83/1,294,558.74
  6. Step 6: Final answer
    x = 1,489,846.45

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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.