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Finding the Fourth Proportional to 553,359.88, 762,028.66 and 480,729.60

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Solution

The fourth proportional to 553,359.88, 762,028.66 and 480,729.60 is: 662,009.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,359.88 : 762,028.66 = 480,729.60 : x
  2. Step 2: Convert to fraction form
    553,359.88/762,028.66 = 480,729.60/x
  3. Step 3: Cross multiply
    553,359.88x = 762,028.66 × 480,729.60
  4. Step 4: Simplify right side
    553,359.88x = 366,329,732,910.34
  5. Step 5: Solve for x
    x = 366,329,732,910.34/553,359.88
  6. Step 6: Final answer
    x = 662,009.93

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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.