Home / 762,661.80-1,143,992.70-638,245.80

Finding the Fourth Proportional to 762,661.80, 1,143,992.70 and 638,245.80

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Solution

The fourth proportional to 762,661.80, 1,143,992.70 and 638,245.80 is: 957,368.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    762,661.80 : 1,143,992.70 = 638,245.80 : x
  2. Step 2: Convert to fraction form
    762,661.80/1,143,992.70 = 638,245.80/x
  3. Step 3: Cross multiply
    762,661.80x = 1,143,992.70 × 638,245.80
  4. Step 4: Simplify right side
    762,661.80x = 730,148,536,005.66
  5. Step 5: Solve for x
    x = 730,148,536,005.66/762,661.80
  6. Step 6: Final answer
    x = 957,368.70

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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.