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Finding the Fourth Proportional to 689,615.10, 951,650.64 and 383,675.94

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Solution

The fourth proportional to 689,615.10, 951,650.64 and 383,675.94 is: 529,462.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,615.10 : 951,650.64 = 383,675.94 : x
  2. Step 2: Convert to fraction form
    689,615.10/951,650.64 = 383,675.94/x
  3. Step 3: Cross multiply
    689,615.10x = 951,650.64 × 383,675.94
  4. Step 4: Simplify right side
    689,615.10x = 365,125,453,853.60
  5. Step 5: Solve for x
    x = 365,125,453,853.60/689,615.10
  6. Step 6: Final answer
    x = 529,462.67

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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.