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Finding the Fourth Proportional to 890,014.80, 1,334,431.80 and 490,846.80

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Solution

The fourth proportional to 890,014.80, 1,334,431.80 and 490,846.80 is: 735,944.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,014.80 : 1,334,431.80 = 490,846.80 : x
  2. Step 2: Convert to fraction form
    890,014.80/1,334,431.80 = 490,846.80/x
  3. Step 3: Cross multiply
    890,014.80x = 1,334,431.80 × 490,846.80
  4. Step 4: Simplify right side
    890,014.80x = 655,001,578,848.24
  5. Step 5: Solve for x
    x = 655,001,578,848.24/890,014.80
  6. Step 6: Final answer
    x = 735,944.59

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Double scale
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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.