Home / 762,912,101.70-1,144,368,152.55-394,446,341.70

Finding the Fourth Proportional to 762,912,101.70, 1,144,368,152.55 and 394,446,341.70

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Solution

The fourth proportional to 762,912,101.70, 1,144,368,152.55 and 394,446,341.70 is: 591,669,512.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,912,101.70 : 1,144,368,152.55 = 394,446,341.70 : x
  2. Step 2: Convert to fraction form
    762,912,101.70/1,144,368,152.55 = 394,446,341.70/x
  3. Step 3: Cross multiply
    762,912,101.70x = 1,144,368,152.55 × 394,446,341.70
  4. Step 4: Simplify right side
    762,912,101.70x = 451,391,831,331,334,976
  5. Step 5: Solve for x
    x = 451,391,831,331,334,976/762,912,101.70
  6. Step 6: Final answer
    x = 591,669,512.55

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Double scale
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Similar ratio
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1.5x scale

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.