Home / 842,486.40-1,263,729.60-523,621.80

Finding the Fourth Proportional to 842,486.40, 1,263,729.60 and 523,621.80

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Solution

The fourth proportional to 842,486.40, 1,263,729.60 and 523,621.80 is: 785,432.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    842,486.40 : 1,263,729.60 = 523,621.80 : x
  2. Step 2: Convert to fraction form
    842,486.40/1,263,729.60 = 523,621.80/x
  3. Step 3: Cross multiply
    842,486.40x = 1,263,729.60 × 523,621.80
  4. Step 4: Simplify right side
    842,486.40x = 661,716,367,865.28
  5. Step 5: Solve for x
    x = 661,716,367,865.28/842,486.40
  6. Step 6: Final answer
    x = 785,432.70

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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.