Home / 768,381.92-1,060,467.36-428,920.64

Finding the Fourth Proportional to 768,381.92, 1,060,467.36 and 428,920.64

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Solution

The fourth proportional to 768,381.92, 1,060,467.36 and 428,920.64 is: 591,966.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,381.92 : 1,060,467.36 = 428,920.64 : x
  2. Step 2: Convert to fraction form
    768,381.92/1,060,467.36 = 428,920.64/x
  3. Step 3: Cross multiply
    768,381.92x = 1,060,467.36 × 428,920.64
  4. Step 4: Simplify right side
    768,381.92x = 454,856,338,750.31
  5. Step 5: Solve for x
    x = 454,856,338,750.31/768,381.92
  6. Step 6: Final answer
    x = 591,966.48

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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.