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Finding the Fourth Proportional to 1,300,742.64, 1,950,916.68 and 354,187.80

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Solution

The fourth proportional to 1,300,742.64, 1,950,916.68 and 354,187.80 is: 531,227.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,300,742.64 : 1,950,916.68 = 354,187.80 : x
  2. Step 2: Convert to fraction form
    1,300,742.64/1,950,916.68 = 354,187.80/x
  3. Step 3: Cross multiply
    1,300,742.64x = 1,950,916.68 × 354,187.80
  4. Step 4: Simplify right side
    1,300,742.64x = 690,990,886,872.50
  5. Step 5: Solve for x
    x = 690,990,886,872.50/1,300,742.64
  6. Step 6: Final answer
    x = 531,227.98

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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.