Home / 815,057,789.20-1,222,586,683.80-406,911,101.20

Finding the Fourth Proportional to 815,057,789.20, 1,222,586,683.80 and 406,911,101.20

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Solution

The fourth proportional to 815,057,789.20, 1,222,586,683.80 and 406,911,101.20 is: 610,366,651.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,057,789.20 : 1,222,586,683.80 = 406,911,101.20 : x
  2. Step 2: Convert to fraction form
    815,057,789.20/1,222,586,683.80 = 406,911,101.20/x
  3. Step 3: Cross multiply
    815,057,789.20x = 1,222,586,683.80 × 406,911,101.20
  4. Step 4: Simplify right side
    815,057,789.20x = 497,484,093,817,514,176
  5. Step 5: Solve for x
    x = 497,484,093,817,514,176/815,057,789.20
  6. Step 6: Final answer
    x = 610,366,651.80

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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.