Home / 782,339.87-1,173,509.80-427,160.13

Finding the Fourth Proportional to 782,339.87, 1,173,509.80 and 427,160.13

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Solution

The fourth proportional to 782,339.87, 1,173,509.80 and 427,160.13 is: 640,740.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    782,339.87 : 1,173,509.80 = 427,160.13 : x
  2. Step 2: Convert to fraction form
    782,339.87/1,173,509.80 = 427,160.13/x
  3. Step 3: Cross multiply
    782,339.87x = 1,173,509.80 × 427,160.13
  4. Step 4: Simplify right side
    782,339.87x = 501,276,601,058.09
  5. Step 5: Solve for x
    x = 501,276,601,058.09/782,339.87
  6. Step 6: Final answer
    x = 640,740.20

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Similar ratio
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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.