Home / 716,121.54-988,227.98-393,831.60

Finding the Fourth Proportional to 716,121.54, 988,227.98 and 393,831.60

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Solution

The fourth proportional to 716,121.54, 988,227.98 and 393,831.60 is: 543,476.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,121.54 : 988,227.98 = 393,831.60 : x
  2. Step 2: Convert to fraction form
    716,121.54/988,227.98 = 393,831.60/x
  3. Step 3: Cross multiply
    716,121.54x = 988,227.98 × 393,831.60
  4. Step 4: Simplify right side
    716,121.54x = 389,195,406,528.17
  5. Step 5: Solve for x
    x = 389,195,406,528.17/716,121.54
  6. Step 6: Final answer
    x = 543,476.75

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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.