Home / 855,355.20-1,283,032.80-656,289.60

Finding the Fourth Proportional to 855,355.20, 1,283,032.80 and 656,289.60

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Solution

The fourth proportional to 855,355.20, 1,283,032.80 and 656,289.60 is: 984,434.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,355.20 : 1,283,032.80 = 656,289.60 : x
  2. Step 2: Convert to fraction form
    855,355.20/1,283,032.80 = 656,289.60/x
  3. Step 3: Cross multiply
    855,355.20x = 1,283,032.80 × 656,289.60
  4. Step 4: Simplify right side
    855,355.20x = 842,041,083,098.88
  5. Step 5: Solve for x
    x = 842,041,083,098.88/855,355.20
  6. Step 6: Final answer
    x = 984,434.40

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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.