Home / 713,831.94-985,087.17-391,543.47

Finding the Fourth Proportional to 713,831.94, 985,087.17 and 391,543.47

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Solution

The fourth proportional to 713,831.94, 985,087.17 and 391,543.47 is: 540,329.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,831.94 : 985,087.17 = 391,543.47 : x
  2. Step 2: Convert to fraction form
    713,831.94/985,087.17 = 391,543.47/x
  3. Step 3: Cross multiply
    713,831.94x = 985,087.17 × 391,543.47
  4. Step 4: Simplify right side
    713,831.94x = 385,704,448,794.28
  5. Step 5: Solve for x
    x = 385,704,448,794.28/713,831.94
  6. Step 6: Final answer
    x = 540,329.49

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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.