Home / 778,982.24-1,074,989.40-421,286.24

Finding the Fourth Proportional to 778,982.24, 1,074,989.40 and 421,286.24

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Solution

The fourth proportional to 778,982.24, 1,074,989.40 and 421,286.24 is: 581,371.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,982.24 : 1,074,989.40 = 421,286.24 : x
  2. Step 2: Convert to fraction form
    778,982.24/1,074,989.40 = 421,286.24/x
  3. Step 3: Cross multiply
    778,982.24x = 1,074,989.40 × 421,286.24
  4. Step 4: Simplify right side
    778,982.24x = 452,878,242,365.86
  5. Step 5: Solve for x
    x = 452,878,242,365.86/778,982.24
  6. Step 6: Final answer
    x = 581,371.72

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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.