Home / 528,981.56-729,986.98-299,532.88

Finding the Fourth Proportional to 528,981.56, 729,986.98 and 299,532.88

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Solution

The fourth proportional to 528,981.56, 729,986.98 and 299,532.88 is: 413,351.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,981.56 : 729,986.98 = 299,532.88 : x
  2. Step 2: Convert to fraction form
    528,981.56/729,986.98 = 299,532.88/x
  3. Step 3: Cross multiply
    528,981.56x = 729,986.98 × 299,532.88
  4. Step 4: Simplify right side
    528,981.56x = 218,655,102,481.90
  5. Step 5: Solve for x
    x = 218,655,102,481.90/528,981.56
  6. Step 6: Final answer
    x = 413,351.09

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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.