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Finding the Fourth Proportional to 719,305.50, 992,641.59 and 401,353.50

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Solution

The fourth proportional to 719,305.50, 992,641.59 and 401,353.50 is: 553,867.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,305.50 : 992,641.59 = 401,353.50 : x
  2. Step 2: Convert to fraction form
    719,305.50/992,641.59 = 401,353.50/x
  3. Step 3: Cross multiply
    719,305.50x = 992,641.59 × 401,353.50
  4. Step 4: Simplify right side
    719,305.50x = 398,400,176,392.07
  5. Step 5: Solve for x
    x = 398,400,176,392.07/719,305.50
  6. Step 6: Final answer
    x = 553,867.83

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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.