Home / 669,917.40-1,003,709.70-433,138.20

Finding the Fourth Proportional to 669,917.40, 1,003,709.70 and 433,138.20

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Solution

The fourth proportional to 669,917.40, 1,003,709.70 and 433,138.20 is: 648,953.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,917.40 : 1,003,709.70 = 433,138.20 : x
  2. Step 2: Convert to fraction form
    669,917.40/1,003,709.70 = 433,138.20/x
  3. Step 3: Cross multiply
    669,917.40x = 1,003,709.70 × 433,138.20
  4. Step 4: Simplify right side
    669,917.40x = 434,745,012,780.54
  5. Step 5: Solve for x
    x = 434,745,012,780.54/669,917.40
  6. Step 6: Final answer
    x = 648,953.16

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1.5x scale

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.