Home / 698,976,009.20-1,048,464,013.80-685,371,119.60

Finding the Fourth Proportional to 698,976,009.20, 1,048,464,013.80 and 685,371,119.60

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Solution

The fourth proportional to 698,976,009.20, 1,048,464,013.80 and 685,371,119.60 is: 1,028,056,679.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,976,009.20 : 1,048,464,013.80 = 685,371,119.60 : x
  2. Step 2: Convert to fraction form
    698,976,009.20/1,048,464,013.80 = 685,371,119.60/x
  3. Step 3: Cross multiply
    698,976,009.20x = 1,048,464,013.80 × 685,371,119.60
  4. Step 4: Simplify right side
    698,976,009.20x = 718,586,954,998,415,872
  5. Step 5: Solve for x
    x = 718,586,954,998,415,872/698,976,009.20
  6. Step 6: Final answer
    x = 1,028,056,679.40

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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.