Home / 900,793,385.70-1,351,393,821.90-486,261,309.47

Finding the Fourth Proportional to 900,793,385.70, 1,351,393,821.90 and 486,261,309.47

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Solution

The fourth proportional to 900,793,385.70, 1,351,393,821.90 and 486,261,309.47 is: 729,501,947.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    900,793,385.70 : 1,351,393,821.90 = 486,261,309.47 : x
  2. Step 2: Convert to fraction form
    900,793,385.70/1,351,393,821.90 = 486,261,309.47/x
  3. Step 3: Cross multiply
    900,793,385.70x = 1,351,393,821.90 × 486,261,309.47
  4. Step 4: Simplify right side
    900,793,385.70x = 657,130,529,446,762,112
  5. Step 5: Solve for x
    x = 657,130,529,446,762,112/900,793,385.70
  6. Step 6: Final answer
    x = 729,501,947.81

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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.