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Finding the Fourth Proportional to 553,760.49, 764,189.78 and 299,111.67

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Solution

The fourth proportional to 553,760.49, 764,189.78 and 299,111.67 is: 412,774.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,760.49 : 764,189.78 = 299,111.67 : x
  2. Step 2: Convert to fraction form
    553,760.49/764,189.78 = 299,111.67/x
  3. Step 3: Cross multiply
    553,760.49x = 764,189.78 × 299,111.67
  4. Step 4: Simplify right side
    553,760.49x = 228,578,081,707.65
  5. Step 5: Solve for x
    x = 228,578,081,707.65/553,760.49
  6. Step 6: Final answer
    x = 412,774.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.