Home / 643,015.74-964,541.61-243,581.34

Finding the Fourth Proportional to 643,015.74, 964,541.61 and 243,581.34

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Solution

The fourth proportional to 643,015.74, 964,541.61 and 243,581.34 is: 365,378.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,015.74 : 964,541.61 = 243,581.34 : x
  2. Step 2: Convert to fraction form
    643,015.74/964,541.61 = 243,581.34/x
  3. Step 3: Cross multiply
    643,015.74x = 964,541.61 × 243,581.34
  4. Step 4: Simplify right side
    643,015.74x = 234,944,337,849.56
  5. Step 5: Solve for x
    x = 234,944,337,849.56/643,015.74
  6. Step 6: Final answer
    x = 365,378.83

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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.