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Finding the Fourth Proportional to 840,367.62, 1,260,550.71 and 307,930.32

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Solution

The fourth proportional to 840,367.62, 1,260,550.71 and 307,930.32 is: 461,895.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,367.62 : 1,260,550.71 = 307,930.32 : x
  2. Step 2: Convert to fraction form
    840,367.62/1,260,550.71 = 307,930.32/x
  3. Step 3: Cross multiply
    840,367.62x = 1,260,550.71 × 307,930.32
  4. Step 4: Simplify right side
    840,367.62x = 388,161,783,506.53
  5. Step 5: Solve for x
    x = 388,161,783,506.53/840,367.62
  6. Step 6: Final answer
    x = 461,895.22

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Double scale
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1.5x scale

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.