Home / 817,756.50-1,128,382.86-491,000.49

Finding the Fourth Proportional to 817,756.50, 1,128,382.86 and 491,000.49

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Solution

The fourth proportional to 817,756.50, 1,128,382.86 and 491,000.49 is: 677,507.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,756.50 : 1,128,382.86 = 491,000.49 : x
  2. Step 2: Convert to fraction form
    817,756.50/1,128,382.86 = 491,000.49/x
  3. Step 3: Cross multiply
    817,756.50x = 1,128,382.86 × 491,000.49
  4. Step 4: Simplify right side
    817,756.50x = 554,036,537,167.60
  5. Step 5: Solve for x
    x = 554,036,537,167.60/817,756.50
  6. Step 6: Final answer
    x = 677,507.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.