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Finding the Fourth Proportional to 566,079.80, 781,161.90 and 311,424.44

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Solution

The fourth proportional to 566,079.80, 781,161.90 and 311,424.44 is: 429,750.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,079.80 : 781,161.90 = 311,424.44 : x
  2. Step 2: Convert to fraction form
    566,079.80/781,161.90 = 311,424.44/x
  3. Step 3: Cross multiply
    566,079.80x = 781,161.90 × 311,424.44
  4. Step 4: Simplify right side
    566,079.80x = 243,272,907,256.84
  5. Step 5: Solve for x
    x = 243,272,907,256.84/566,079.80
  6. Step 6: Final answer
    x = 429,750.20

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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.