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Finding the Fourth Proportional to 607,337.20, 911,005.80 and 489,239.20

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Solution

The fourth proportional to 607,337.20, 911,005.80 and 489,239.20 is: 733,858.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,337.20 : 911,005.80 = 489,239.20 : x
  2. Step 2: Convert to fraction form
    607,337.20/911,005.80 = 489,239.20/x
  3. Step 3: Cross multiply
    607,337.20x = 911,005.80 × 489,239.20
  4. Step 4: Simplify right side
    607,337.20x = 445,699,748,787.36
  5. Step 5: Solve for x
    x = 445,699,748,787.36/607,337.20
  6. Step 6: Final answer
    x = 733,858.80

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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.