Home / 764,898.70-1,147,676.10-390,921.70

Finding the Fourth Proportional to 764,898.70, 1,147,676.10 and 390,921.70

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Solution

The fourth proportional to 764,898.70, 1,147,676.10 and 390,921.70 is: 586,550.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,898.70 : 1,147,676.10 = 390,921.70 : x
  2. Step 2: Convert to fraction form
    764,898.70/1,147,676.10 = 390,921.70/x
  3. Step 3: Cross multiply
    764,898.70x = 1,147,676.10 × 390,921.70
  4. Step 4: Simplify right side
    764,898.70x = 448,651,492,061.37
  5. Step 5: Solve for x
    x = 448,651,492,061.37/764,898.70
  6. Step 6: Final answer
    x = 586,550.21

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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.