Home / 927,280.80-1,389,884.40-394,711.20

Finding the Fourth Proportional to 927,280.80, 1,389,884.40 and 394,711.20

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Solution

The fourth proportional to 927,280.80, 1,389,884.40 and 394,711.20 is: 591,625.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    927,280.80 : 1,389,884.40 = 394,711.20 : x
  2. Step 2: Convert to fraction form
    927,280.80/1,389,884.40 = 394,711.20/x
  3. Step 3: Cross multiply
    927,280.80x = 1,389,884.40 × 394,711.20
  4. Step 4: Simplify right side
    927,280.80x = 548,602,939,385.28
  5. Step 5: Solve for x
    x = 548,602,939,385.28/927,280.80
  6. Step 6: Final answer
    x = 591,625.47

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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.