Home / 873,165.78-1,205,115.84-505,589.40

Finding the Fourth Proportional to 873,165.78, 1,205,115.84 and 505,589.40

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Solution

The fourth proportional to 873,165.78, 1,205,115.84 and 505,589.40 is: 697,798.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,165.78 : 1,205,115.84 = 505,589.40 : x
  2. Step 2: Convert to fraction form
    873,165.78/1,205,115.84 = 505,589.40/x
  3. Step 3: Cross multiply
    873,165.78x = 1,205,115.84 × 505,589.40
  4. Step 4: Simplify right side
    873,165.78x = 609,293,794,476.10
  5. Step 5: Solve for x
    x = 609,293,794,476.10/873,165.78
  6. Step 6: Final answer
    x = 697,798.53

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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.