Home / 685,549,608.75-1,028,000,243.16-265,567,680.39

Finding the Fourth Proportional to 685,549,608.75, 1,028,000,243.16 and 265,567,680.39

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Solution

The fourth proportional to 685,549,608.75, 1,028,000,243.16 and 265,567,680.39 is: 398,225,943.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,549,608.75 : 1,028,000,243.16 = 265,567,680.39 : x
  2. Step 2: Convert to fraction form
    685,549,608.75/1,028,000,243.16 = 265,567,680.39/x
  3. Step 3: Cross multiply
    685,549,608.75x = 1,028,000,243.16 × 265,567,680.39
  4. Step 4: Simplify right side
    685,549,608.75x = 273,003,640,016,357,152
  5. Step 5: Solve for x
    x = 273,003,640,016,357,152/685,549,608.75
  6. Step 6: Final answer
    x = 398,225,943.87

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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.