Home / 764,783.84-1,146,142.35-291,210.86

Finding the Fourth Proportional to 764,783.84, 1,146,142.35 and 291,210.86

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Solution

The fourth proportional to 764,783.84, 1,146,142.35 and 291,210.86 is: 436,422.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,783.84 : 1,146,142.35 = 291,210.86 : x
  2. Step 2: Convert to fraction form
    764,783.84/1,146,142.35 = 291,210.86/x
  3. Step 3: Cross multiply
    764,783.84x = 1,146,142.35 × 291,210.86
  4. Step 4: Simplify right side
    764,783.84x = 333,769,093,695.21
  5. Step 5: Solve for x
    x = 333,769,093,695.21/764,783.84
  6. Step 6: Final answer
    x = 436,422.79

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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.