Home / 695,319,253.20-1,042,978,879.80-210,645,061.20

Finding the Fourth Proportional to 695,319,253.20, 1,042,978,879.80 and 210,645,061.20

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Solution

The fourth proportional to 695,319,253.20, 1,042,978,879.80 and 210,645,061.20 is: 315,967,591.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    695,319,253.20 : 1,042,978,879.80 = 210,645,061.20 : x
  2. Step 2: Convert to fraction form
    695,319,253.20/1,042,978,879.80 = 210,645,061.20/x
  3. Step 3: Cross multiply
    695,319,253.20x = 1,042,978,879.80 × 210,645,061.20
  4. Step 4: Simplify right side
    695,319,253.20x = 219,698,349,965,778,432
  5. Step 5: Solve for x
    x = 219,698,349,965,778,432/695,319,253.20
  6. Step 6: Final answer
    x = 315,967,591.80

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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.