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Finding the Fourth Proportional to 719,578.50, 992,095.28 and 590,039.70

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Solution

The fourth proportional to 719,578.50, 992,095.28 and 590,039.70 is: 813,497.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,578.50 : 992,095.28 = 590,039.70 : x
  2. Step 2: Convert to fraction form
    719,578.50/992,095.28 = 590,039.70/x
  3. Step 3: Cross multiply
    719,578.50x = 992,095.28 × 590,039.70
  4. Step 4: Simplify right side
    719,578.50x = 585,375,601,382.62
  5. Step 5: Solve for x
    x = 585,375,601,382.62/719,578.50
  6. Step 6: Final answer
    x = 813,497.90

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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.