Home / 815,984,418.88-1,224,337,220.40-427,714,411.36

Finding the Fourth Proportional to 815,984,418.88, 1,224,337,220.40 and 427,714,411.36

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Solution

The fourth proportional to 815,984,418.88, 1,224,337,220.40 and 427,714,411.36 is: 641,760,628.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,984,418.88 : 1,224,337,220.40 = 427,714,411.36 : x
  2. Step 2: Convert to fraction form
    815,984,418.88/1,224,337,220.40 = 427,714,411.36/x
  3. Step 3: Cross multiply
    815,984,418.88x = 1,224,337,220.40 × 427,714,411.36
  4. Step 4: Simplify right side
    815,984,418.88x = 523,666,673,529,524,672
  5. Step 5: Solve for x
    x = 523,666,673,529,524,672/815,984,418.88
  6. Step 6: Final answer
    x = 641,760,628.53

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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.