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Finding the Fourth Proportional to 978,035.70, 1,466,928.81 and 378,586.70

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Solution

The fourth proportional to 978,035.70, 1,466,928.81 and 378,586.70 is: 567,831.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    978,035.70 : 1,466,928.81 = 378,586.70 : x
  2. Step 2: Convert to fraction form
    978,035.70/1,466,928.81 = 378,586.70/x
  3. Step 3: Cross multiply
    978,035.70x = 1,466,928.81 × 378,586.70
  4. Step 4: Simplify right side
    978,035.70x = 555,359,737,312.83
  5. Step 5: Solve for x
    x = 555,359,737,312.83/978,035.70
  6. Step 6: Final answer
    x = 567,831.76

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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.