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Finding the Fourth Proportional to 483,937.10, 725,905.65 and 405,788.30

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Solution

The fourth proportional to 483,937.10, 725,905.65 and 405,788.30 is: 608,682.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,937.10 : 725,905.65 = 405,788.30 : x
  2. Step 2: Convert to fraction form
    483,937.10/725,905.65 = 405,788.30/x
  3. Step 3: Cross multiply
    483,937.10x = 725,905.65 × 405,788.30
  4. Step 4: Simplify right side
    483,937.10x = 294,564,019,673.90
  5. Step 5: Solve for x
    x = 294,564,019,673.90/483,937.10
  6. Step 6: Final answer
    x = 608,682.45

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.