Home / 698,192,603.90-1,047,288,905.85-639,238,082.30

Finding the Fourth Proportional to 698,192,603.90, 1,047,288,905.85 and 639,238,082.30

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Solution

The fourth proportional to 698,192,603.90, 1,047,288,905.85 and 639,238,082.30 is: 958,857,123.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,192,603.90 : 1,047,288,905.85 = 639,238,082.30 : x
  2. Step 2: Convert to fraction form
    698,192,603.90/1,047,288,905.85 = 639,238,082.30/x
  3. Step 3: Cross multiply
    698,192,603.90x = 1,047,288,905.85 × 639,238,082.30
  4. Step 4: Simplify right side
    698,192,603.90x = 669,466,951,789,619,200
  5. Step 5: Solve for x
    x = 669,466,951,789,619,200/698,192,603.90
  6. Step 6: Final answer
    x = 958,857,123.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.