Home / 721,868.64-993,896.16-635,766.72

Finding the Fourth Proportional to 721,868.64, 993,896.16 and 635,766.72

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Solution

The fourth proportional to 721,868.64, 993,896.16 and 635,766.72 is: 875,347.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,868.64 : 993,896.16 = 635,766.72 : x
  2. Step 2: Convert to fraction form
    721,868.64/993,896.16 = 635,766.72/x
  3. Step 3: Cross multiply
    721,868.64x = 993,896.16 × 635,766.72
  4. Step 4: Simplify right side
    721,868.64x = 631,886,101,663.80
  5. Step 5: Solve for x
    x = 631,886,101,663.80/721,868.64
  6. Step 6: Final answer
    x = 875,347.77

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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.