Home / 685,459,071.28-1,028,221,674.36-225,387,054.64

Finding the Fourth Proportional to 685,459,071.28, 1,028,221,674.36 and 225,387,054.64

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Solution

The fourth proportional to 685,459,071.28, 1,028,221,674.36 and 225,387,054.64 is: 338,091,454.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,459,071.28 : 1,028,221,674.36 = 225,387,054.64 : x
  2. Step 2: Convert to fraction form
    685,459,071.28/1,028,221,674.36 = 225,387,054.64/x
  3. Step 3: Cross multiply
    685,459,071.28x = 1,028,221,674.36 × 225,387,054.64
  4. Step 4: Simplify right side
    685,459,071.28x = 231,747,854,701,009,600
  5. Step 5: Solve for x
    x = 231,747,854,701,009,600/685,459,071.28
  6. Step 6: Final answer
    x = 338,091,454.93

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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.