Home / 876,101.60-1,314,670.80-638,847.20

Finding the Fourth Proportional to 876,101.60, 1,314,670.80 and 638,847.20

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Solution

The fourth proportional to 876,101.60, 1,314,670.80 and 638,847.20 is: 958,648.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    876,101.60 : 1,314,670.80 = 638,847.20 : x
  2. Step 2: Convert to fraction form
    876,101.60/1,314,670.80 = 638,847.20/x
  3. Step 3: Cross multiply
    876,101.60x = 1,314,670.80 × 638,847.20
  4. Step 4: Simplify right side
    876,101.60x = 839,873,759,501.76
  5. Step 5: Solve for x
    x = 839,873,759,501.76/876,101.60
  6. Step 6: Final answer
    x = 958,648.81

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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.