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Finding the Fourth Proportional to 888,684,692.82, 1,227,209,239.95 and 665,278,520.34

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Solution

The fourth proportional to 888,684,692.82, 1,227,209,239.95 and 665,278,520.34 is: 918,701,485.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,684,692.82 : 1,227,209,239.95 = 665,278,520.34 : x
  2. Step 2: Convert to fraction form
    888,684,692.82/1,227,209,239.95 = 665,278,520.34/x
  3. Step 3: Cross multiply
    888,684,692.82x = 1,227,209,239.95 × 665,278,520.34
  4. Step 4: Simplify right side
    888,684,692.82x = 816,435,947,301,512,064
  5. Step 5: Solve for x
    x = 816,435,947,301,512,064/888,684,692.82
  6. Step 6: Final answer
    x = 918,701,485.35

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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.