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Finding the Fourth Proportional to 764,808.16, 1,055,372.16 and 450,429.92

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Solution

The fourth proportional to 764,808.16, 1,055,372.16 and 450,429.92 is: 621,556.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,808.16 : 1,055,372.16 = 450,429.92 : x
  2. Step 2: Convert to fraction form
    764,808.16/1,055,372.16 = 450,429.92/x
  3. Step 3: Cross multiply
    764,808.16x = 1,055,372.16 × 450,429.92
  4. Step 4: Simplify right side
    764,808.16x = 475,371,197,599.03
  5. Step 5: Solve for x
    x = 475,371,197,599.03/764,808.16
  6. Step 6: Final answer
    x = 621,556.13

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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.