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Finding the Fourth Proportional to 883,688.80, 1,219,490.40 and 481,280.80

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Solution

The fourth proportional to 883,688.80, 1,219,490.40 and 481,280.80 is: 664,167.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    883,688.80 : 1,219,490.40 = 481,280.80 : x
  2. Step 2: Convert to fraction form
    883,688.80/1,219,490.40 = 481,280.80/x
  3. Step 3: Cross multiply
    883,688.80x = 1,219,490.40 × 481,280.80
  4. Step 4: Simplify right side
    883,688.80x = 586,917,315,304.32
  5. Step 5: Solve for x
    x = 586,917,315,304.32/883,688.80
  6. Step 6: Final answer
    x = 664,167.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.