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Finding the Fourth Proportional to 788,809.70, 1,183,344.15 and 339,745.70

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Solution

The fourth proportional to 788,809.70, 1,183,344.15 and 339,745.70 is: 509,674.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,809.70 : 1,183,344.15 = 339,745.70 : x
  2. Step 2: Convert to fraction form
    788,809.70/1,183,344.15 = 339,745.70/x
  3. Step 3: Cross multiply
    788,809.70x = 1,183,344.15 × 339,745.70
  4. Step 4: Simplify right side
    788,809.70x = 402,036,086,582.66
  5. Step 5: Solve for x
    x = 402,036,086,582.66/788,809.70
  6. Step 6: Final answer
    x = 509,674.37

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Double scale
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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.