Home / 421,015,055.44-631,515,420.60-125,910,850

Finding the Fourth Proportional to 421,015,055.44, 631,515,420.60 and 125,910,850

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Solution

The fourth proportional to 421,015,055.44, 631,515,420.60 and 125,910,850 is: 188,864,132.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,015,055.44 : 631,515,420.60 = 125,910,850 : x
  2. Step 2: Convert to fraction form
    421,015,055.44/631,515,420.60 = 125,910,850/x
  3. Step 3: Cross multiply
    421,015,055.44x = 631,515,420.60 × 125,910,850
  4. Step 4: Simplify right side
    421,015,055.44x = 79,514,643,395,853,520
  5. Step 5: Solve for x
    x = 79,514,643,395,853,520/421,015,055.44
  6. Step 6: Final answer
    x = 188,864,132.93

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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.