Home / 386,784.81-580,165.07-106,299.63

Finding the Fourth Proportional to 386,784.81, 580,165.07 and 106,299.63

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Solution

The fourth proportional to 386,784.81, 580,165.07 and 106,299.63 is: 159,446.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,784.81 : 580,165.07 = 106,299.63 : x
  2. Step 2: Convert to fraction form
    386,784.81/580,165.07 = 106,299.63/x
  3. Step 3: Cross multiply
    386,784.81x = 580,165.07 × 106,299.63
  4. Step 4: Simplify right side
    386,784.81x = 61,671,331,748.43
  5. Step 5: Solve for x
    x = 61,671,331,748.43/386,784.81
  6. Step 6: Final answer
    x = 159,446.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.