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Finding the Fourth Proportional to 978,947.48, 1,352,323.88 and 755,465.24

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Solution

The fourth proportional to 978,947.48, 1,352,323.88 and 755,465.24 is: 1,043,604.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,947.48 : 1,352,323.88 = 755,465.24 : x
  2. Step 2: Convert to fraction form
    978,947.48/1,352,323.88 = 755,465.24/x
  3. Step 3: Cross multiply
    978,947.48x = 1,352,323.88 × 755,465.24
  4. Step 4: Simplify right side
    978,947.48x = 1,021,633,674,022.99
  5. Step 5: Solve for x
    x = 1,021,633,674,022.99/978,947.48
  6. Step 6: Final answer
    x = 1,043,604.18

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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.