Home / 685,346,572.20-1,028,607,723.90-276,695,999.40

Finding the Fourth Proportional to 685,346,572.20, 1,028,607,723.90 and 276,695,999.40

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Solution

The fourth proportional to 685,346,572.20, 1,028,607,723.90 and 276,695,999.40 is: 415,281,338.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,346,572.20 : 1,028,607,723.90 = 276,695,999.40 : x
  2. Step 2: Convert to fraction form
    685,346,572.20/1,028,607,723.90 = 276,695,999.40/x
  3. Step 3: Cross multiply
    685,346,572.20x = 1,028,607,723.90 × 276,695,999.40
  4. Step 4: Simplify right side
    685,346,572.20x = 284,611,642,155,069,728
  5. Step 5: Solve for x
    x = 284,611,642,155,069,728/685,346,572.20
  6. Step 6: Final answer
    x = 415,281,338.96

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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.