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Finding the Fourth Proportional to 663,245.90, 993,313.65 and 451,738.70

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Solution

The fourth proportional to 663,245.90, 993,313.65 and 451,738.70 is: 676,548.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,245.90 : 993,313.65 = 451,738.70 : x
  2. Step 2: Convert to fraction form
    663,245.90/993,313.65 = 451,738.70/x
  3. Step 3: Cross multiply
    663,245.90x = 993,313.65 × 451,738.70
  4. Step 4: Simplify right side
    663,245.90x = 448,718,216,943.26
  5. Step 5: Solve for x
    x = 448,718,216,943.26/663,245.90
  6. Step 6: Final answer
    x = 676,548.80

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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.