Home / 528,964.50-729,976.30-287,249.16

Finding the Fourth Proportional to 528,964.50, 729,976.30 and 287,249.16

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Solution

The fourth proportional to 528,964.50, 729,976.30 and 287,249.16 is: 396,406.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,964.50 : 729,976.30 = 287,249.16 : x
  2. Step 2: Convert to fraction form
    528,964.50/729,976.30 = 287,249.16/x
  3. Step 3: Cross multiply
    528,964.50x = 729,976.30 × 287,249.16
  4. Step 4: Simplify right side
    528,964.50x = 209,685,078,994.91
  5. Step 5: Solve for x
    x = 209,685,078,994.91/528,964.50
  6. Step 6: Final answer
    x = 396,406.71

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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.