Home / 458,143.20-686,777.40-356,885.10

Finding the Fourth Proportional to 458,143.20, 686,777.40 and 356,885.10

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Solution

The fourth proportional to 458,143.20, 686,777.40 and 356,885.10 is: 534,986.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,143.20 : 686,777.40 = 356,885.10 : x
  2. Step 2: Convert to fraction form
    458,143.20/686,777.40 = 356,885.10/x
  3. Step 3: Cross multiply
    458,143.20x = 686,777.40 × 356,885.10
  4. Step 4: Simplify right side
    458,143.20x = 245,100,621,076.74
  5. Step 5: Solve for x
    x = 245,100,621,076.74/458,143.20
  6. Step 6: Final answer
    x = 534,986.92

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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.