Home / 806,823.60-1,210,983.20-407,745.28

Finding the Fourth Proportional to 806,823.60, 1,210,983.20 and 407,745.28

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Solution

The fourth proportional to 806,823.60, 1,210,983.20 and 407,745.28 is: 611,995.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,823.60 : 1,210,983.20 = 407,745.28 : x
  2. Step 2: Convert to fraction form
    806,823.60/1,210,983.20 = 407,745.28/x
  3. Step 3: Cross multiply
    806,823.60x = 1,210,983.20 × 407,745.28
  4. Step 4: Simplify right side
    806,823.60x = 493,772,683,959.30
  5. Step 5: Solve for x
    x = 493,772,683,959.30/806,823.60
  6. Step 6: Final answer
    x = 611,995.84

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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.