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Finding the Fourth Proportional to 719,825.88, 993,359.71 and 418,039.32

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Solution

The fourth proportional to 719,825.88, 993,359.71 and 418,039.32 is: 576,894.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,825.88 : 993,359.71 = 418,039.32 : x
  2. Step 2: Convert to fraction form
    719,825.88/993,359.71 = 418,039.32/x
  3. Step 3: Cross multiply
    719,825.88x = 993,359.71 × 418,039.32
  4. Step 4: Simplify right side
    719,825.88x = 415,263,417,683.80
  5. Step 5: Solve for x
    x = 415,263,417,683.80/719,825.88
  6. Step 6: Final answer
    x = 576,894.26

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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.