Home / 816,187.20-1,224,280.80-442,939.20

Finding the Fourth Proportional to 816,187.20, 1,224,280.80 and 442,939.20

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Solution

The fourth proportional to 816,187.20, 1,224,280.80 and 442,939.20 is: 664,408.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    816,187.20 : 1,224,280.80 = 442,939.20 : x
  2. Step 2: Convert to fraction form
    816,187.20/1,224,280.80 = 442,939.20/x
  3. Step 3: Cross multiply
    816,187.20x = 1,224,280.80 × 442,939.20
  4. Step 4: Simplify right side
    816,187.20x = 542,281,958,127.36
  5. Step 5: Solve for x
    x = 542,281,958,127.36/816,187.20
  6. Step 6: Final answer
    x = 664,408.80

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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.