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Finding the Fourth Proportional to 719,314, 992,653.32 and 401,362

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Solution

The fourth proportional to 719,314, 992,653.32 and 401,362 is: 553,879.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,314 : 992,653.32 = 401,362 : x
  2. Step 2: Convert to fraction form
    719,314/992,653.32 = 401,362/x
  3. Step 3: Cross multiply
    719,314x = 992,653.32 × 401,362
  4. Step 4: Simplify right side
    719,314x = 398,413,321,821.84
  5. Step 5: Solve for x
    x = 398,413,321,821.84/719,314
  6. Step 6: Final answer
    x = 553,879.56

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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.