Home / 631,180.07-870,764.25-385,979.10

Finding the Fourth Proportional to 631,180.07, 870,764.25 and 385,979.10

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Solution

The fourth proportional to 631,180.07, 870,764.25 and 385,979.10 is: 532,489.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    631,180.07 : 870,764.25 = 385,979.10 : x
  2. Step 2: Convert to fraction form
    631,180.07/870,764.25 = 385,979.10/x
  3. Step 3: Cross multiply
    631,180.07x = 870,764.25 × 385,979.10
  4. Step 4: Simplify right side
    631,180.07x = 336,096,801,527.18
  5. Step 5: Solve for x
    x = 336,096,801,527.18/631,180.07
  6. Step 6: Final answer
    x = 532,489.57

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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.