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Finding the Fourth Proportional to 552,642.84, 762,646.94 and 307,622.28

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Solution

The fourth proportional to 552,642.84, 762,646.94 and 307,622.28 is: 424,518.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,642.84 : 762,646.94 = 307,622.28 : x
  2. Step 2: Convert to fraction form
    552,642.84/762,646.94 = 307,622.28/x
  3. Step 3: Cross multiply
    552,642.84x = 762,646.94 × 307,622.28
  4. Step 4: Simplify right side
    552,642.84x = 234,607,190,133.30
  5. Step 5: Solve for x
    x = 234,607,190,133.30/552,642.84
  6. Step 6: Final answer
    x = 424,518.64

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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.