Home / 764,109.60-1,147,388.40-607,639.20

Finding the Fourth Proportional to 764,109.60, 1,147,388.40 and 607,639.20

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Solution

The fourth proportional to 764,109.60, 1,147,388.40 and 607,639.20 is: 912,432.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,109.60 : 1,147,388.40 = 607,639.20 : x
  2. Step 2: Convert to fraction form
    764,109.60/1,147,388.40 = 607,639.20/x
  3. Step 3: Cross multiply
    764,109.60x = 1,147,388.40 × 607,639.20
  4. Step 4: Simplify right side
    764,109.60x = 697,198,169,465.28
  5. Step 5: Solve for x
    x = 697,198,169,465.28/764,109.60
  6. Step 6: Final answer
    x = 912,432.16

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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.