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Finding the Fourth Proportional to 646,390.50, 969,690.81 and 191,027.94

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Solution

The fourth proportional to 646,390.50, 969,690.81 and 191,027.94 is: 286,572.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,390.50 : 969,690.81 = 191,027.94 : x
  2. Step 2: Convert to fraction form
    646,390.50/969,690.81 = 191,027.94/x
  3. Step 3: Cross multiply
    646,390.50x = 969,690.81 × 191,027.94
  4. Step 4: Simplify right side
    646,390.50x = 185,238,037,871.23
  5. Step 5: Solve for x
    x = 185,238,037,871.23/646,390.50
  6. Step 6: Final answer
    x = 286,572.96

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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.