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Finding the Fourth Proportional to 501,254.34, 691,767.57 and 286,389.78

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Solution

The fourth proportional to 501,254.34, 691,767.57 and 286,389.78 is: 395,238.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,254.34 : 691,767.57 = 286,389.78 : x
  2. Step 2: Convert to fraction form
    501,254.34/691,767.57 = 286,389.78/x
  3. Step 3: Cross multiply
    501,254.34x = 691,767.57 × 286,389.78
  4. Step 4: Simplify right side
    501,254.34x = 198,115,162,183.44
  5. Step 5: Solve for x
    x = 198,115,162,183.44/501,254.34
  6. Step 6: Final answer
    x = 395,238.80

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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.