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Finding the Fourth Proportional to 723,659.78, 997,997 and 451,752.90

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Solution

The fourth proportional to 723,659.78, 997,997 and 451,752.90 is: 623,011.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    723,659.78 : 997,997 = 451,752.90 : x
  2. Step 2: Convert to fraction form
    723,659.78/997,997 = 451,752.90/x
  3. Step 3: Cross multiply
    723,659.78x = 997,997 × 451,752.90
  4. Step 4: Simplify right side
    723,659.78x = 450,848,038,941.30
  5. Step 5: Solve for x
    x = 450,848,038,941.30/723,659.78
  6. Step 6: Final answer
    x = 623,011.05

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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.