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Finding the Fourth Proportional to 978,463.79, 1,350,289.81 and 548,734.69

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Solution

The fourth proportional to 978,463.79, 1,350,289.81 and 548,734.69 is: 757,259.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,463.79 : 1,350,289.81 = 548,734.69 : x
  2. Step 2: Convert to fraction form
    978,463.79/1,350,289.81 = 548,734.69/x
  3. Step 3: Cross multiply
    978,463.79x = 1,350,289.81 × 548,734.69
  4. Step 4: Simplify right side
    978,463.79x = 740,950,858,928.67
  5. Step 5: Solve for x
    x = 740,950,858,928.67/978,463.79
  6. Step 6: Final answer
    x = 757,259.36

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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.