Home / 873,622.27-1,205,399.25-491,509.63

Finding the Fourth Proportional to 873,622.27, 1,205,399.25 and 491,509.63

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Solution

The fourth proportional to 873,622.27, 1,205,399.25 and 491,509.63 is: 678,171.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,622.27 : 1,205,399.25 = 491,509.63 : x
  2. Step 2: Convert to fraction form
    873,622.27/1,205,399.25 = 491,509.63/x
  3. Step 3: Cross multiply
    873,622.27x = 1,205,399.25 × 491,509.63
  4. Step 4: Simplify right side
    873,622.27x = 592,465,339,369.78
  5. Step 5: Solve for x
    x = 592,465,339,369.78/873,622.27
  6. Step 6: Final answer
    x = 678,171.06

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1.5x scale

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.