Home / 727,987.80-1,091,981.70-665,002.20

Finding the Fourth Proportional to 727,987.80, 1,091,981.70 and 665,002.20

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Solution

The fourth proportional to 727,987.80, 1,091,981.70 and 665,002.20 is: 997,503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,987.80 : 1,091,981.70 = 665,002.20 : x
  2. Step 2: Convert to fraction form
    727,987.80/1,091,981.70 = 665,002.20/x
  3. Step 3: Cross multiply
    727,987.80x = 1,091,981.70 × 665,002.20
  4. Step 4: Simplify right side
    727,987.80x = 726,170,232,859.74
  5. Step 5: Solve for x
    x = 726,170,232,859.74/727,987.80
  6. Step 6: Final answer
    x = 997,503.30

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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.