Home / 723,140.20-1,085,228.70-407,261.80

Finding the Fourth Proportional to 723,140.20, 1,085,228.70 and 407,261.80

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Solution

The fourth proportional to 723,140.20, 1,085,228.70 and 407,261.80 is: 611,184.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,140.20 : 1,085,228.70 = 407,261.80 : x
  2. Step 2: Convert to fraction form
    723,140.20/1,085,228.70 = 407,261.80/x
  3. Step 3: Cross multiply
    723,140.20x = 1,085,228.70 × 407,261.80
  4. Step 4: Simplify right side
    723,140.20x = 441,972,193,773.66
  5. Step 5: Solve for x
    x = 441,972,193,773.66/723,140.20
  6. Step 6: Final answer
    x = 611,184.66

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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.