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Finding the Fourth Proportional to 702,692.20, 969,715.55 and 380,402.29

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Solution

The fourth proportional to 702,692.20, 969,715.55 and 380,402.29 is: 524,955.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,692.20 : 969,715.55 = 380,402.29 : x
  2. Step 2: Convert to fraction form
    702,692.20/969,715.55 = 380,402.29/x
  3. Step 3: Cross multiply
    702,692.20x = 969,715.55 × 380,402.29
  4. Step 4: Simplify right side
    702,692.20x = 368,882,018,031.76
  5. Step 5: Solve for x
    x = 368,882,018,031.76/702,692.20
  6. Step 6: Final answer
    x = 524,955.33

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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.