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Finding the Fourth Proportional to 690,800.35, 953,267.56 and 380,692.86

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Solution

The fourth proportional to 690,800.35, 953,267.56 and 380,692.86 is: 525,335.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,800.35 : 953,267.56 = 380,692.86 : x
  2. Step 2: Convert to fraction form
    690,800.35/953,267.56 = 380,692.86/x
  3. Step 3: Cross multiply
    690,800.35x = 953,267.56 × 380,692.86
  4. Step 4: Simplify right side
    690,800.35x = 362,902,153,761.62
  5. Step 5: Solve for x
    x = 362,902,153,761.62/690,800.35
  6. Step 6: Final answer
    x = 525,335.80

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1.5x scale

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.