Home / 873,634.28-1,205,415.82-491,521.64

Finding the Fourth Proportional to 873,634.28, 1,205,415.82 and 491,521.64

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Solution

The fourth proportional to 873,634.28, 1,205,415.82 and 491,521.64 is: 678,187.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,634.28 : 1,205,415.82 = 491,521.64 : x
  2. Step 2: Convert to fraction form
    873,634.28/1,205,415.82 = 491,521.64/x
  3. Step 3: Cross multiply
    873,634.28x = 1,205,415.82 × 491,521.64
  4. Step 4: Simplify right side
    873,634.28x = 592,487,960,728.35
  5. Step 5: Solve for x
    x = 592,487,960,728.35/873,634.28
  6. Step 6: Final answer
    x = 678,187.63

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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.