Home / 501,389.37-691,967.07-286,560.36

Finding the Fourth Proportional to 501,389.37, 691,967.07 and 286,560.36

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Solution

The fourth proportional to 501,389.37, 691,967.07 and 286,560.36 is: 395,481.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,389.37 : 691,967.07 = 286,560.36 : x
  2. Step 2: Convert to fraction form
    501,389.37/691,967.07 = 286,560.36/x
  3. Step 3: Cross multiply
    501,389.37x = 691,967.07 × 286,560.36
  4. Step 4: Simplify right side
    501,389.37x = 198,290,332,687.35
  5. Step 5: Solve for x
    x = 198,290,332,687.35/501,389.37
  6. Step 6: Final answer
    x = 395,481.72

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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.