Home / 648,405.16-894,948.42-380,219.56

Finding the Fourth Proportional to 648,405.16, 894,948.42 and 380,219.56

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Solution

The fourth proportional to 648,405.16, 894,948.42 and 380,219.56 is: 524,790.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,405.16 : 894,948.42 = 380,219.56 : x
  2. Step 2: Convert to fraction form
    648,405.16/894,948.42 = 380,219.56/x
  3. Step 3: Cross multiply
    648,405.16x = 894,948.42 × 380,219.56
  4. Step 4: Simplify right side
    648,405.16x = 340,276,894,475.10
  5. Step 5: Solve for x
    x = 340,276,894,475.10/648,405.16
  6. Step 6: Final answer
    x = 524,790.54

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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.