Home / 758,522.88-1,138,371.84-285,638.40

Finding the Fourth Proportional to 758,522.88, 1,138,371.84 and 285,638.40

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Solution

The fourth proportional to 758,522.88, 1,138,371.84 and 285,638.40 is: 428,678.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,522.88 : 1,138,371.84 = 285,638.40 : x
  2. Step 2: Convert to fraction form
    758,522.88/1,138,371.84 = 285,638.40/x
  3. Step 3: Cross multiply
    758,522.88x = 1,138,371.84 × 285,638.40
  4. Step 4: Simplify right side
    758,522.88x = 325,162,710,982.66
  5. Step 5: Solve for x
    x = 325,162,710,982.66/758,522.88
  6. Step 6: Final answer
    x = 428,678.84

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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.