Home / 389,146.41-583,402.64-261,194.63

Finding the Fourth Proportional to 389,146.41, 583,402.64 and 261,194.63

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Solution

The fourth proportional to 389,146.41, 583,402.64 and 261,194.63 is: 391,579.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,146.41 : 583,402.64 = 261,194.63 : x
  2. Step 2: Convert to fraction form
    389,146.41/583,402.64 = 261,194.63/x
  3. Step 3: Cross multiply
    389,146.41x = 583,402.64 × 261,194.63
  4. Step 4: Simplify right side
    389,146.41x = 152,381,632,472.84
  5. Step 5: Solve for x
    x = 152,381,632,472.84/389,146.41
  6. Step 6: Final answer
    x = 391,579.18

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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.