Home / 788,812.20-1,183,347.90-339,748.20

Finding the Fourth Proportional to 788,812.20, 1,183,347.90 and 339,748.20

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Solution

The fourth proportional to 788,812.20, 1,183,347.90 and 339,748.20 is: 509,678.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,812.20 : 1,183,347.90 = 339,748.20 : x
  2. Step 2: Convert to fraction form
    788,812.20/1,183,347.90 = 339,748.20/x
  3. Step 3: Cross multiply
    788,812.20x = 1,183,347.90 × 339,748.20
  4. Step 4: Simplify right side
    788,812.20x = 402,040,318,998.78
  5. Step 5: Solve for x
    x = 402,040,318,998.78/788,812.20
  6. Step 6: Final answer
    x = 509,678.12

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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.