Home / 698,977.74-964,570.14-393,046.21

Finding the Fourth Proportional to 698,977.74, 964,570.14 and 393,046.21

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Solution

The fourth proportional to 698,977.74, 964,570.14 and 393,046.21 is: 542,393.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,977.74 : 964,570.14 = 393,046.21 : x
  2. Step 2: Convert to fraction form
    698,977.74/964,570.14 = 393,046.21/x
  3. Step 3: Cross multiply
    698,977.74x = 964,570.14 × 393,046.21
  4. Step 4: Simplify right side
    698,977.74x = 379,120,637,806.17
  5. Step 5: Solve for x
    x = 379,120,637,806.17/698,977.74
  6. Step 6: Final answer
    x = 542,393.01

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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.