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Finding the Fourth Proportional to 719,158.60, 992,446.50 and 396,880.84

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Solution

The fourth proportional to 719,158.60, 992,446.50 and 396,880.84 is: 547,699.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,158.60 : 992,446.50 = 396,880.84 : x
  2. Step 2: Convert to fraction form
    719,158.60/992,446.50 = 396,880.84/x
  3. Step 3: Cross multiply
    719,158.60x = 992,446.50 × 396,880.84
  4. Step 4: Simplify right side
    719,158.60x = 393,883,000,575.06
  5. Step 5: Solve for x
    x = 393,883,000,575.06/719,158.60
  6. Step 6: Final answer
    x = 547,699.77

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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.