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Finding the Fourth Proportional to 620,439.40, 930,831.90 and 304,906.60

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Solution

The fourth proportional to 620,439.40, 930,831.90 and 304,906.60 is: 457,444.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,439.40 : 930,831.90 = 304,906.60 : x
  2. Step 2: Convert to fraction form
    620,439.40/930,831.90 = 304,906.60/x
  3. Step 3: Cross multiply
    620,439.40x = 930,831.90 × 304,906.60
  4. Step 4: Simplify right side
    620,439.40x = 283,816,789,800.54
  5. Step 5: Solve for x
    x = 283,816,789,800.54/620,439.40
  6. Step 6: Final answer
    x = 457,444.82

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1.5x scale

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.