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Finding the Fourth Proportional to 507,747.76, 700,663.39 and 278,261.31

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Solution

The fourth proportional to 507,747.76, 700,663.39 and 278,261.31 is: 383,984.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    507,747.76 : 700,663.39 = 278,261.31 : x
  2. Step 2: Convert to fraction form
    507,747.76/700,663.39 = 278,261.31/x
  3. Step 3: Cross multiply
    507,747.76x = 700,663.39 × 278,261.31
  4. Step 4: Simplify right side
    507,747.76x = 194,967,512,770.44
  5. Step 5: Solve for x
    x = 194,967,512,770.44/507,747.76
  6. Step 6: Final answer
    x = 383,984.98

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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.