Home / 788,763.60-1,183,145.40-339,699.60

Finding the Fourth Proportional to 788,763.60, 1,183,145.40 and 339,699.60

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Solution

The fourth proportional to 788,763.60, 1,183,145.40 and 339,699.60 is: 509,549.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,763.60 : 1,183,145.40 = 339,699.60 : x
  2. Step 2: Convert to fraction form
    788,763.60/1,183,145.40 = 339,699.60/x
  3. Step 3: Cross multiply
    788,763.60x = 1,183,145.40 × 339,699.60
  4. Step 4: Simplify right side
    788,763.60x = 401,914,019,121.84
  5. Step 5: Solve for x
    x = 401,914,019,121.84/788,763.60
  6. Step 6: Final answer
    x = 509,549.40

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Half scale
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Double scale
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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.