Home / 981,520.84-1,354,500.87-551,804.50

Finding the Fourth Proportional to 981,520.84, 1,354,500.87 and 551,804.50

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Solution

The fourth proportional to 981,520.84, 1,354,500.87 and 551,804.50 is: 761,491.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    981,520.84 : 1,354,500.87 = 551,804.50 : x
  2. Step 2: Convert to fraction form
    981,520.84/1,354,500.87 = 551,804.50/x
  3. Step 3: Cross multiply
    981,520.84x = 1,354,500.87 × 551,804.50
  4. Step 4: Simplify right side
    981,520.84x = 747,419,672,560.89
  5. Step 5: Solve for x
    x = 747,419,672,560.89/981,520.84
  6. Step 6: Final answer
    x = 761,491.39

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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.