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Finding the Fourth Proportional to 604,908.90, 907,363.35 and 405,843.30

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Solution

The fourth proportional to 604,908.90, 907,363.35 and 405,843.30 is: 608,764.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,908.90 : 907,363.35 = 405,843.30 : x
  2. Step 2: Convert to fraction form
    604,908.90/907,363.35 = 405,843.30/x
  3. Step 3: Cross multiply
    604,908.90x = 907,363.35 × 405,843.30
  4. Step 4: Simplify right side
    604,908.90x = 368,247,336,263.06
  5. Step 5: Solve for x
    x = 368,247,336,263.06/604,908.90
  6. Step 6: Final answer
    x = 608,764.95

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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.