Home / 648,406.16-894,949.80-380,220.56

Finding the Fourth Proportional to 648,406.16, 894,949.80 and 380,220.56

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Solution

The fourth proportional to 648,406.16, 894,949.80 and 380,220.56 is: 524,791.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,406.16 : 894,949.80 = 380,220.56 : x
  2. Step 2: Convert to fraction form
    648,406.16/894,949.80 = 380,220.56/x
  3. Step 3: Cross multiply
    648,406.16x = 894,949.80 × 380,220.56
  4. Step 4: Simplify right side
    648,406.16x = 340,278,314,127.89
  5. Step 5: Solve for x
    x = 340,278,314,127.89/648,406.16
  6. Step 6: Final answer
    x = 524,791.92

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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.