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Finding the Fourth Proportional to 607,350.90, 911,026.35 and 408,285.30

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Solution

The fourth proportional to 607,350.90, 911,026.35 and 408,285.30 is: 612,427.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,350.90 : 911,026.35 = 408,285.30 : x
  2. Step 2: Convert to fraction form
    607,350.90/911,026.35 = 408,285.30/x
  3. Step 3: Cross multiply
    607,350.90x = 911,026.35 × 408,285.30
  4. Step 4: Simplify right side
    607,350.90x = 371,958,666,617.66
  5. Step 5: Solve for x
    x = 371,958,666,617.66/607,350.90
  6. Step 6: Final answer
    x = 612,427.95

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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.