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Finding the Fourth Proportional to 648,405.66, 894,949.11 and 380,220.06

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Solution

The fourth proportional to 648,405.66, 894,949.11 and 380,220.06 is: 524,791.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,405.66 : 894,949.11 = 380,220.06 : x
  2. Step 2: Convert to fraction form
    648,405.66/894,949.11 = 380,220.06/x
  3. Step 3: Cross multiply
    648,405.66x = 894,949.11 × 380,220.06
  4. Step 4: Simplify right side
    648,405.66x = 340,277,604,301.15
  5. Step 5: Solve for x
    x = 340,277,604,301.15/648,405.66
  6. Step 6: Final answer
    x = 524,791.23

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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.