Home / 772,405.20-1,158,607.80-394,491.60

Finding the Fourth Proportional to 772,405.20, 1,158,607.80 and 394,491.60

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Solution

The fourth proportional to 772,405.20, 1,158,607.80 and 394,491.60 is: 591,737.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,405.20 : 1,158,607.80 = 394,491.60 : x
  2. Step 2: Convert to fraction form
    772,405.20/1,158,607.80 = 394,491.60/x
  3. Step 3: Cross multiply
    772,405.20x = 1,158,607.80 × 394,491.60
  4. Step 4: Simplify right side
    772,405.20x = 457,061,044,794.48
  5. Step 5: Solve for x
    x = 457,061,044,794.48/772,405.20
  6. Step 6: Final answer
    x = 591,737.40

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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.