Home / 890,472.40-1,335,838.20-291,288.40

Finding the Fourth Proportional to 890,472.40, 1,335,838.20 and 291,288.40

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Solution

The fourth proportional to 890,472.40, 1,335,838.20 and 291,288.40 is: 436,974.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,472.40 : 1,335,838.20 = 291,288.40 : x
  2. Step 2: Convert to fraction form
    890,472.40/1,335,838.20 = 291,288.40/x
  3. Step 3: Cross multiply
    890,472.40x = 1,335,838.20 × 291,288.40
  4. Step 4: Simplify right side
    890,472.40x = 389,114,171,936.88
  5. Step 5: Solve for x
    x = 389,114,171,936.88/890,472.40
  6. Step 6: Final answer
    x = 436,974.99

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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.