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Finding the Fourth Proportional to 719,308, 992,645.04 and 401,356

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Solution

The fourth proportional to 719,308, 992,645.04 and 401,356 is: 553,871.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,308 : 992,645.04 = 401,356 : x
  2. Step 2: Convert to fraction form
    719,308/992,645.04 = 401,356/x
  3. Step 3: Cross multiply
    719,308x = 992,645.04 × 401,356
  4. Step 4: Simplify right side
    719,308x = 398,404,042,674.24
  5. Step 5: Solve for x
    x = 398,404,042,674.24/719,308
  6. Step 6: Final answer
    x = 553,871.28

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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.