Home / 656,355,909.77-905,574,514.41-377,890,273.61

Finding the Fourth Proportional to 656,355,909.77, 905,574,514.41 and 377,890,273.61

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Solution

The fourth proportional to 656,355,909.77, 905,574,514.41 and 377,890,273.61 is: 521,375,363.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,355,909.77 : 905,574,514.41 = 377,890,273.61 : x
  2. Step 2: Convert to fraction form
    656,355,909.77/905,574,514.41 = 377,890,273.61/x
  3. Step 3: Cross multiply
    656,355,909.77x = 905,574,514.41 × 377,890,273.61
  4. Step 4: Simplify right side
    656,355,909.77x = 342,207,801,020,109,888
  5. Step 5: Solve for x
    x = 342,207,801,020,109,888/656,355,909.77
  6. Step 6: Final answer
    x = 521,375,363.47

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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.