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Finding the Fourth Proportional to 689,219.16, 951,123 and 383,288.88

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Solution

The fourth proportional to 689,219.16, 951,123 and 383,288.88 is: 528,938.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,219.16 : 951,123 = 383,288.88 : x
  2. Step 2: Convert to fraction form
    689,219.16/951,123 = 383,288.88/x
  3. Step 3: Cross multiply
    689,219.16x = 951,123 × 383,288.88
  4. Step 4: Simplify right side
    689,219.16x = 364,554,869,412.24
  5. Step 5: Solve for x
    x = 364,554,869,412.24/689,219.16
  6. Step 6: Final answer
    x = 528,938.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.