Home / 873,416.28-1,205,338-491,456.64

Finding the Fourth Proportional to 873,416.28, 1,205,338 and 491,456.64

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Solution

The fourth proportional to 873,416.28, 1,205,338 and 491,456.64 is: 678,223.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    873,416.28 : 1,205,338 = 491,456.64 : x
  2. Step 2: Convert to fraction form
    873,416.28/1,205,338 = 491,456.64/x
  3. Step 3: Cross multiply
    873,416.28x = 1,205,338 × 491,456.64
  4. Step 4: Simplify right side
    873,416.28x = 592,371,363,544.32
  5. Step 5: Solve for x
    x = 592,371,363,544.32/873,416.28
  6. Step 6: Final answer
    x = 678,223.41

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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.