Home / 641,621,039.20-885,414,122.76-363,156,582.40

Finding the Fourth Proportional to 641,621,039.20, 885,414,122.76 and 363,156,582.40

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Solution

The fourth proportional to 641,621,039.20, 885,414,122.76 and 363,156,582.40 is: 501,143,115.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,621,039.20 : 885,414,122.76 = 363,156,582.40 : x
  2. Step 2: Convert to fraction form
    641,621,039.20/885,414,122.76 = 363,156,582.40/x
  3. Step 3: Cross multiply
    641,621,039.20x = 885,414,122.76 × 363,156,582.40
  4. Step 4: Simplify right side
    641,621,039.20x = 321,543,966,830,215,616
  5. Step 5: Solve for x
    x = 321,543,966,830,215,616/641,621,039.20
  6. Step 6: Final answer
    x = 501,143,115.93

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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.