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Finding the Fourth Proportional to 855,632.60, 1,180,838.57 and 488,117.82

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Solution

The fourth proportional to 855,632.60, 1,180,838.57 and 488,117.82 is: 673,640.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,632.60 : 1,180,838.57 = 488,117.82 : x
  2. Step 2: Convert to fraction form
    855,632.60/1,180,838.57 = 488,117.82/x
  3. Step 3: Cross multiply
    855,632.60x = 1,180,838.57 × 488,117.82
  4. Step 4: Simplify right side
    855,632.60x = 576,388,346,119.73
  5. Step 5: Solve for x
    x = 576,388,346,119.73/855,632.60
  6. Step 6: Final answer
    x = 673,640.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.