Home / 642,799.08-886,969.44-356,319.12

Finding the Fourth Proportional to 642,799.08, 886,969.44 and 356,319.12

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Solution

The fourth proportional to 642,799.08, 886,969.44 and 356,319.12 is: 491,668.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,799.08 : 886,969.44 = 356,319.12 : x
  2. Step 2: Convert to fraction form
    642,799.08/886,969.44 = 356,319.12/x
  3. Step 3: Cross multiply
    642,799.08x = 886,969.44 × 356,319.12
  4. Step 4: Simplify right side
    642,799.08x = 316,044,170,327.69
  5. Step 5: Solve for x
    x = 316,044,170,327.69/642,799.08
  6. Step 6: Final answer
    x = 491,668.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.