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Finding the Fourth Proportional to 903,963.90, 1,355,902.65 and 304,866.30

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Solution

The fourth proportional to 903,963.90, 1,355,902.65 and 304,866.30 is: 457,284.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    903,963.90 : 1,355,902.65 = 304,866.30 : x
  2. Step 2: Convert to fraction form
    903,963.90/1,355,902.65 = 304,866.30/x
  3. Step 3: Cross multiply
    903,963.90x = 1,355,902.65 × 304,866.30
  4. Step 4: Simplify right side
    903,963.90x = 413,369,024,065.70
  5. Step 5: Solve for x
    x = 413,369,024,065.70/903,963.90
  6. Step 6: Final answer
    x = 457,284.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.