Home / 698,976,018.20-1,048,464,027.30-685,371,128.60

Finding the Fourth Proportional to 698,976,018.20, 1,048,464,027.30 and 685,371,128.60

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Solution

The fourth proportional to 698,976,018.20, 1,048,464,027.30 and 685,371,128.60 is: 1,028,056,692.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,976,018.20 : 1,048,464,027.30 = 685,371,128.60 : x
  2. Step 2: Convert to fraction form
    698,976,018.20/1,048,464,027.30 = 685,371,128.60/x
  3. Step 3: Cross multiply
    698,976,018.20x = 1,048,464,027.30 × 685,371,128.60
  4. Step 4: Simplify right side
    698,976,018.20x = 718,586,973,687,102,208
  5. Step 5: Solve for x
    x = 718,586,973,687,102,208/698,976,018.20
  6. Step 6: Final answer
    x = 1,028,056,692.90

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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.