Home / 677,724.40-1,015,420.20-440,945.20

Finding the Fourth Proportional to 677,724.40, 1,015,420.20 and 440,945.20

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Solution

The fourth proportional to 677,724.40, 1,015,420.20 and 440,945.20 is: 660,658.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    677,724.40 : 1,015,420.20 = 440,945.20 : x
  2. Step 2: Convert to fraction form
    677,724.40/1,015,420.20 = 440,945.20/x
  3. Step 3: Cross multiply
    677,724.40x = 1,015,420.20 × 440,945.20
  4. Step 4: Simplify right side
    677,724.40x = 447,744,663,173.04
  5. Step 5: Solve for x
    x = 447,744,663,173.04/677,724.40
  6. Step 6: Final answer
    x = 660,658.91

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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.