Home / 1,123,731,781.88-1,550,753,176.80-621,975,415.40

Finding the Fourth Proportional to 1,123,731,781.88, 1,550,753,176.80 and 621,975,415.40

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Solution

The fourth proportional to 1,123,731,781.88, 1,550,753,176.80 and 621,975,415.40 is: 858,327,909.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,731,781.88 : 1,550,753,176.80 = 621,975,415.40 : x
  2. Step 2: Convert to fraction form
    1,123,731,781.88/1,550,753,176.80 = 621,975,415.40/x
  3. Step 3: Cross multiply
    1,123,731,781.88x = 1,550,753,176.80 × 621,975,415.40
  4. Step 4: Simplify right side
    1,123,731,781.88x = 964,530,351,323,049,600
  5. Step 5: Solve for x
    x = 964,530,351,323,049,600/1,123,731,781.88
  6. Step 6: Final answer
    x = 858,327,909.63

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1.5x scale

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.