Home / 660,869,937.58-912,067,406.89-378,649,813.25

Finding the Fourth Proportional to 660,869,937.58, 912,067,406.89 and 378,649,813.25

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Solution

The fourth proportional to 660,869,937.58, 912,067,406.89 and 378,649,813.25 is: 522,575,069.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,869,937.58 : 912,067,406.89 = 378,649,813.25 : x
  2. Step 2: Convert to fraction form
    660,869,937.58/912,067,406.89 = 378,649,813.25/x
  3. Step 3: Cross multiply
    660,869,937.58x = 912,067,406.89 × 378,649,813.25
  4. Step 4: Simplify right side
    660,869,937.58x = 345,354,153,290,310,272
  5. Step 5: Solve for x
    x = 345,354,153,290,310,272/660,869,937.58
  6. Step 6: Final answer
    x = 522,575,069.09

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.