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Finding the Fourth Proportional to 723,655.78, 997,991.49 and 451,748.90

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Solution

The fourth proportional to 723,655.78, 997,991.49 and 451,748.90 is: 623,005.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,655.78 : 997,991.49 = 451,748.90 : x
  2. Step 2: Convert to fraction form
    723,655.78/997,991.49 = 451,748.90/x
  3. Step 3: Cross multiply
    723,655.78x = 997,991.49 × 451,748.90
  4. Step 4: Simplify right side
    723,655.78x = 450,841,555,558.12
  5. Step 5: Solve for x
    x = 450,841,555,558.12/723,655.78
  6. Step 6: Final answer
    x = 623,005.54

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1.5x scale

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.