Home / 768,132.40-1,060,018.20-428,599.60

Finding the Fourth Proportional to 768,132.40, 1,060,018.20 and 428,599.60

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Solution

The fourth proportional to 768,132.40, 1,060,018.20 and 428,599.60 is: 591,464.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,132.40 : 1,060,018.20 = 428,599.60 : x
  2. Step 2: Convert to fraction form
    768,132.40/1,060,018.20 = 428,599.60/x
  3. Step 3: Cross multiply
    768,132.40x = 1,060,018.20 × 428,599.60
  4. Step 4: Simplify right side
    768,132.40x = 454,323,376,512.72
  5. Step 5: Solve for x
    x = 454,323,376,512.72/768,132.40
  6. Step 6: Final answer
    x = 591,464.93

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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.