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Finding the Fourth Proportional to 552,789, 762,851.88 and 311,075.64

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Solution

The fourth proportional to 552,789, 762,851.88 and 311,075.64 is: 429,286.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,789 : 762,851.88 = 311,075.64 : x
  2. Step 2: Convert to fraction form
    552,789/762,851.88 = 311,075.64/x
  3. Step 3: Cross multiply
    552,789x = 762,851.88 × 311,075.64
  4. Step 4: Simplify right side
    552,789x = 237,304,636,796.20
  5. Step 5: Solve for x
    x = 237,304,636,796.20/552,789
  6. Step 6: Final answer
    x = 429,286.11

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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.