Home / 763,661.80-1,145,492.70-639,245.80

Finding the Fourth Proportional to 763,661.80, 1,145,492.70 and 639,245.80

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Solution

The fourth proportional to 763,661.80, 1,145,492.70 and 639,245.80 is: 958,868.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,661.80 : 1,145,492.70 = 639,245.80 : x
  2. Step 2: Convert to fraction form
    763,661.80/1,145,492.70 = 639,245.80/x
  3. Step 3: Cross multiply
    763,661.80x = 1,145,492.70 × 639,245.80
  4. Step 4: Simplify right side
    763,661.80x = 732,251,397,405.66
  5. Step 5: Solve for x
    x = 732,251,397,405.66/763,661.80
  6. Step 6: Final answer
    x = 958,868.70

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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.