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Finding the Fourth Proportional to 777,124.80, 1,165,725.60 and 403,876.80

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Solution

The fourth proportional to 777,124.80, 1,165,725.60 and 403,876.80 is: 605,835.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,124.80 : 1,165,725.60 = 403,876.80 : x
  2. Step 2: Convert to fraction form
    777,124.80/1,165,725.60 = 403,876.80/x
  3. Step 3: Cross multiply
    777,124.80x = 1,165,725.60 × 403,876.80
  4. Step 4: Simplify right side
    777,124.80x = 470,809,525,006.08
  5. Step 5: Solve for x
    x = 470,809,525,006.08/777,124.80
  6. Step 6: Final answer
    x = 605,835.16

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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.