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Finding the Fourth Proportional to 487,384.40, 731,076.60 and 443,838.80

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Solution

The fourth proportional to 487,384.40, 731,076.60 and 443,838.80 is: 665,758.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,384.40 : 731,076.60 = 443,838.80 : x
  2. Step 2: Convert to fraction form
    487,384.40/731,076.60 = 443,838.80/x
  3. Step 3: Cross multiply
    487,384.40x = 731,076.60 × 443,838.80
  4. Step 4: Simplify right side
    487,384.40x = 324,480,160,852.08
  5. Step 5: Solve for x
    x = 324,480,160,852.08/487,384.40
  6. Step 6: Final answer
    x = 665,758.20

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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.