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Finding the Fourth Proportional to 501,898.72, 692,620.76 and 272,455.88

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Solution

The fourth proportional to 501,898.72, 692,620.76 and 272,455.88 is: 375,989.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,898.72 : 692,620.76 = 272,455.88 : x
  2. Step 2: Convert to fraction form
    501,898.72/692,620.76 = 272,455.88/x
  3. Step 3: Cross multiply
    501,898.72x = 692,620.76 × 272,455.88
  4. Step 4: Simplify right side
    501,898.72x = 188,708,598,672.07
  5. Step 5: Solve for x
    x = 188,708,598,672.07/501,898.72
  6. Step 6: Final answer
    x = 375,989.40

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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.