Home / 764,631.48-1,147,180.50-390,916.92

Finding the Fourth Proportional to 764,631.48, 1,147,180.50 and 390,916.92

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Solution

The fourth proportional to 764,631.48, 1,147,180.50 and 390,916.92 is: 586,494.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,631.48 : 1,147,180.50 = 390,916.92 : x
  2. Step 2: Convert to fraction form
    764,631.48/1,147,180.50 = 390,916.92/x
  3. Step 3: Cross multiply
    764,631.48x = 1,147,180.50 × 390,916.92
  4. Step 4: Simplify right side
    764,631.48x = 448,452,267,744.06
  5. Step 5: Solve for x
    x = 448,452,267,744.06/764,631.48
  6. Step 6: Final answer
    x = 586,494.64

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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.