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Finding the Fourth Proportional to 686,520.46, 947,454.17 and 380,692.73

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Solution

The fourth proportional to 686,520.46, 947,454.17 and 380,692.73 is: 525,386.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,520.46 : 947,454.17 = 380,692.73 : x
  2. Step 2: Convert to fraction form
    686,520.46/947,454.17 = 380,692.73/x
  3. Step 3: Cross multiply
    686,520.46x = 947,454.17 × 380,692.73
  4. Step 4: Simplify right side
    686,520.46x = 360,688,909,662.93
  5. Step 5: Solve for x
    x = 360,688,909,662.93/686,520.46
  6. Step 6: Final answer
    x = 525,386.98

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.