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Finding the Fourth Proportional to 689,980.40, 952,183.72 and 384,060.11

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Solution

The fourth proportional to 689,980.40, 952,183.72 and 384,060.11 is: 530,008.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,980.40 : 952,183.72 = 384,060.11 : x
  2. Step 2: Convert to fraction form
    689,980.40/952,183.72 = 384,060.11/x
  3. Step 3: Cross multiply
    689,980.40x = 952,183.72 × 384,060.11
  4. Step 4: Simplify right side
    689,980.40x = 365,695,779,962.57
  5. Step 5: Solve for x
    x = 365,695,779,962.57/689,980.40
  6. Step 6: Final answer
    x = 530,008.94

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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.