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Finding the Fourth Proportional to 631,093.70, 870,914.04 and 359,182.28

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Solution

The fourth proportional to 631,093.70, 870,914.04 and 359,182.28 is: 495,674.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,093.70 : 870,914.04 = 359,182.28 : x
  2. Step 2: Convert to fraction form
    631,093.70/870,914.04 = 359,182.28/x
  3. Step 3: Cross multiply
    631,093.70x = 870,914.04 × 359,182.28
  4. Step 4: Simplify right side
    631,093.70x = 312,816,890,571.21
  5. Step 5: Solve for x
    x = 312,816,890,571.21/631,093.70
  6. Step 6: Final answer
    x = 495,674.24

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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.