Home / 789,495,909.80-1,089,618,372.78-454,904,373.56

Finding the Fourth Proportional to 789,495,909.80, 1,089,618,372.78 and 454,904,373.56

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Solution

The fourth proportional to 789,495,909.80, 1,089,618,372.78 and 454,904,373.56 is: 627,833,731.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,495,909.80 : 1,089,618,372.78 = 454,904,373.56 : x
  2. Step 2: Convert to fraction form
    789,495,909.80/1,089,618,372.78 = 454,904,373.56/x
  3. Step 3: Cross multiply
    789,495,909.80x = 1,089,618,372.78 × 454,904,373.56
  4. Step 4: Simplify right side
    789,495,909.80x = 495,672,163,288,952,448
  5. Step 5: Solve for x
    x = 495,672,163,288,952,448/789,495,909.80
  6. Step 6: Final answer
    x = 627,833,731.80

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Double scale
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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.