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Finding the Fourth Proportional to 855,347.20, 1,283,020.80 and 656,281.60

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Solution

The fourth proportional to 855,347.20, 1,283,020.80 and 656,281.60 is: 984,422.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,347.20 : 1,283,020.80 = 656,281.60 : x
  2. Step 2: Convert to fraction form
    855,347.20/1,283,020.80 = 656,281.60/x
  3. Step 3: Cross multiply
    855,347.20x = 1,283,020.80 × 656,281.60
  4. Step 4: Simplify right side
    855,347.20x = 842,022,943,457.28
  5. Step 5: Solve for x
    x = 842,022,943,457.28/855,347.20
  6. Step 6: Final answer
    x = 984,422.40

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.