Home / 808,712.40-1,213,846.20-409,803.60

Finding the Fourth Proportional to 808,712.40, 1,213,846.20 and 409,803.60

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Solution

The fourth proportional to 808,712.40, 1,213,846.20 and 409,803.60 is: 615,099.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,712.40 : 1,213,846.20 = 409,803.60 : x
  2. Step 2: Convert to fraction form
    808,712.40/1,213,846.20 = 409,803.60/x
  3. Step 3: Cross multiply
    808,712.40x = 1,213,846.20 × 409,803.60
  4. Step 4: Simplify right side
    808,712.40x = 497,438,542,606.32
  5. Step 5: Solve for x
    x = 497,438,542,606.32/808,712.40
  6. Step 6: Final answer
    x = 615,099.44

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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.