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Finding the Fourth Proportional to 639,335.38, 958,493.81 and 369,157.15

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Solution

The fourth proportional to 639,335.38, 958,493.81 and 369,157.15 is: 553,441.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,335.38 : 958,493.81 = 369,157.15 : x
  2. Step 2: Convert to fraction form
    639,335.38/958,493.81 = 369,157.15/x
  3. Step 3: Cross multiply
    639,335.38x = 958,493.81 × 369,157.15
  4. Step 4: Simplify right side
    639,335.38x = 353,834,837,845.22
  5. Step 5: Solve for x
    x = 353,834,837,845.22/639,335.38
  6. Step 6: Final answer
    x = 553,441.67

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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.