Home / 688,215.46-1,032,087.86-261,648.40

Finding the Fourth Proportional to 688,215.46, 1,032,087.86 and 261,648.40

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Solution

The fourth proportional to 688,215.46, 1,032,087.86 and 261,648.40 is: 392,383.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,215.46 : 1,032,087.86 = 261,648.40 : x
  2. Step 2: Convert to fraction form
    688,215.46/1,032,087.86 = 261,648.40/x
  3. Step 3: Cross multiply
    688,215.46x = 1,032,087.86 × 261,648.40
  4. Step 4: Simplify right side
    688,215.46x = 270,044,137,228.42
  5. Step 5: Solve for x
    x = 270,044,137,228.42/688,215.46
  6. Step 6: Final answer
    x = 392,383.13

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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.