Home / 426,432.34-639,679.29-122,814.10

Finding the Fourth Proportional to 426,432.34, 639,679.29 and 122,814.10

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Solution

The fourth proportional to 426,432.34, 639,679.29 and 122,814.10 is: 184,230.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,432.34 : 639,679.29 = 122,814.10 : x
  2. Step 2: Convert to fraction form
    426,432.34/639,679.29 = 122,814.10/x
  3. Step 3: Cross multiply
    426,432.34x = 639,679.29 × 122,814.10
  4. Step 4: Simplify right side
    426,432.34x = 78,561,636,289.99
  5. Step 5: Solve for x
    x = 78,561,636,289.99/426,432.34
  6. Step 6: Final answer
    x = 184,230.01

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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.