Home / 429,440.31-644,077.35-129,850.67

Finding the Fourth Proportional to 429,440.31, 644,077.35 and 129,850.67

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Solution

The fourth proportional to 429,440.31, 644,077.35 and 129,850.67 is: 194,750.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,440.31 : 644,077.35 = 129,850.67 : x
  2. Step 2: Convert to fraction form
    429,440.31/644,077.35 = 129,850.67/x
  3. Step 3: Cross multiply
    429,440.31x = 644,077.35 × 129,850.67
  4. Step 4: Simplify right side
    429,440.31x = 83,633,877,039.52
  5. Step 5: Solve for x
    x = 83,633,877,039.52/429,440.31
  6. Step 6: Final answer
    x = 194,750.88

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1.5x scale

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.