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Finding the Fourth Proportional to 638,643.29, 957,877.45 and 372,529.13

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Solution

The fourth proportional to 638,643.29, 957,877.45 and 372,529.13 is: 558,742.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,643.29 : 957,877.45 = 372,529.13 : x
  2. Step 2: Convert to fraction form
    638,643.29/957,877.45 = 372,529.13/x
  3. Step 3: Cross multiply
    638,643.29x = 957,877.45 × 372,529.13
  4. Step 4: Simplify right side
    638,643.29x = 356,837,247,374.41
  5. Step 5: Solve for x
    x = 356,837,247,374.41/638,643.29
  6. Step 6: Final answer
    x = 558,742.66

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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.