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Finding the Fourth Proportional to 1,245,594.02, 1,719,344.21 and 774,470.48

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Solution

The fourth proportional to 1,245,594.02, 1,719,344.21 and 774,470.48 is: 1,069,033.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,594.02 : 1,719,344.21 = 774,470.48 : x
  2. Step 2: Convert to fraction form
    1,245,594.02/1,719,344.21 = 774,470.48/x
  3. Step 3: Cross multiply
    1,245,594.02x = 1,719,344.21 × 774,470.48
  4. Step 4: Simplify right side
    1,245,594.02x = 1,331,581,323,134.85
  5. Step 5: Solve for x
    x = 1,331,581,323,134.85/1,245,594.02
  6. Step 6: Final answer
    x = 1,069,033.17

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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.