Home / 890,122.40-1,335,313.20-290,938.40

Finding the Fourth Proportional to 890,122.40, 1,335,313.20 and 290,938.40

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Solution

The fourth proportional to 890,122.40, 1,335,313.20 and 290,938.40 is: 436,449.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,122.40 : 1,335,313.20 = 290,938.40 : x
  2. Step 2: Convert to fraction form
    890,122.40/1,335,313.20 = 290,938.40/x
  3. Step 3: Cross multiply
    890,122.40x = 1,335,313.20 × 290,938.40
  4. Step 4: Simplify right side
    890,122.40x = 388,493,885,906.88
  5. Step 5: Solve for x
    x = 388,493,885,906.88/890,122.40
  6. Step 6: Final answer
    x = 436,449.96

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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.