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Finding the Fourth Proportional to 702,429.39, 969,352.65 and 380,139.57

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Solution

The fourth proportional to 702,429.39, 969,352.65 and 380,139.57 is: 524,592.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,429.39 : 969,352.65 = 380,139.57 : x
  2. Step 2: Convert to fraction form
    702,429.39/969,352.65 = 380,139.57/x
  3. Step 3: Cross multiply
    702,429.39x = 969,352.65 × 380,139.57
  4. Step 4: Simplify right side
    702,429.39x = 368,489,299,549.36
  5. Step 5: Solve for x
    x = 368,489,299,549.36/702,429.39
  6. Step 6: Final answer
    x = 524,592.66

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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.