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Finding the Fourth Proportional to 647,223.36, 891,135.60 and 550,236.36

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Solution

The fourth proportional to 647,223.36, 891,135.60 and 550,236.36 is: 757,598.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,223.36 : 891,135.60 = 550,236.36 : x
  2. Step 2: Convert to fraction form
    647,223.36/891,135.60 = 550,236.36/x
  3. Step 3: Cross multiply
    647,223.36x = 891,135.60 × 550,236.36
  4. Step 4: Simplify right side
    647,223.36x = 490,335,208,810.42
  5. Step 5: Solve for x
    x = 490,335,208,810.42/647,223.36
  6. Step 6: Final answer
    x = 757,598.13

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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.