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Finding the Fourth Proportional to 656,321.56, 983,373.90 and 403,073.80

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Solution

The fourth proportional to 656,321.56, 983,373.90 and 403,073.80 is: 603,929.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,321.56 : 983,373.90 = 403,073.80 : x
  2. Step 2: Convert to fraction form
    656,321.56/983,373.90 = 403,073.80/x
  3. Step 3: Cross multiply
    656,321.56x = 983,373.90 × 403,073.80
  4. Step 4: Simplify right side
    656,321.56x = 396,372,254,693.82
  5. Step 5: Solve for x
    x = 396,372,254,693.82/656,321.56
  6. Step 6: Final answer
    x = 603,929.96

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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.