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Finding the Fourth Proportional to 656,008.05, 905,308.62 and 369,511.05

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Solution

The fourth proportional to 656,008.05, 905,308.62 and 369,511.05 is: 509,935.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,008.05 : 905,308.62 = 369,511.05 : x
  2. Step 2: Convert to fraction form
    656,008.05/905,308.62 = 369,511.05/x
  3. Step 3: Cross multiply
    656,008.05x = 905,308.62 × 369,511.05
  4. Step 4: Simplify right side
    656,008.05x = 334,521,538,750.25
  5. Step 5: Solve for x
    x = 334,521,538,750.25/656,008.05
  6. Step 6: Final answer
    x = 509,935.11

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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.