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Finding the Fourth Proportional to 552,479.04, 762,388.80 and 307,457.28

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Solution

The fourth proportional to 552,479.04, 762,388.80 and 307,457.28 is: 424,273.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,479.04 : 762,388.80 = 307,457.28 : x
  2. Step 2: Convert to fraction form
    552,479.04/762,388.80 = 307,457.28/x
  3. Step 3: Cross multiply
    552,479.04x = 762,388.80 × 307,457.28
  4. Step 4: Simplify right side
    552,479.04x = 234,401,986,750.46
  5. Step 5: Solve for x
    x = 234,401,986,750.46/552,479.04
  6. Step 6: Final answer
    x = 424,273.09

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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.