Home / 890,515.40-1,335,902.70-291,331.40

Finding the Fourth Proportional to 890,515.40, 1,335,902.70 and 291,331.40

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Solution

The fourth proportional to 890,515.40, 1,335,902.70 and 291,331.40 is: 437,039.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,515.40 : 1,335,902.70 = 291,331.40 : x
  2. Step 2: Convert to fraction form
    890,515.40/1,335,902.70 = 291,331.40/x
  3. Step 3: Cross multiply
    890,515.40x = 1,335,902.70 × 291,331.40
  4. Step 4: Simplify right side
    890,515.40x = 389,190,403,854.78
  5. Step 5: Solve for x
    x = 389,190,403,854.78/890,515.40
  6. Step 6: Final answer
    x = 437,039.50

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Similar ratio
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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.