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Finding the Fourth Proportional to 639,364.32, 958,740.48 and 302,123.52

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Solution

The fourth proportional to 639,364.32, 958,740.48 and 302,123.52 is: 453,040.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,364.32 : 958,740.48 = 302,123.52 : x
  2. Step 2: Convert to fraction form
    639,364.32/958,740.48 = 302,123.52/x
  3. Step 3: Cross multiply
    639,364.32x = 958,740.48 × 302,123.52
  4. Step 4: Simplify right side
    639,364.32x = 289,658,048,584.09
  5. Step 5: Solve for x
    x = 289,658,048,584.09/639,364.32
  6. Step 6: Final answer
    x = 453,040.68

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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.