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Finding the Fourth Proportional to 553,938.70, 765,065.96 and 372,335.34

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Solution

The fourth proportional to 553,938.70, 765,065.96 and 372,335.34 is: 514,246.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,938.70 : 765,065.96 = 372,335.34 : x
  2. Step 2: Convert to fraction form
    553,938.70/765,065.96 = 372,335.34/x
  3. Step 3: Cross multiply
    553,938.70x = 765,065.96 × 372,335.34
  4. Step 4: Simplify right side
    553,938.70x = 284,861,094,339.03
  5. Step 5: Solve for x
    x = 284,861,094,339.03/553,938.70
  6. Step 6: Final answer
    x = 514,246.60

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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.