Home / 890,615.40-1,335,923.10-259,549.80

Finding the Fourth Proportional to 890,615.40, 1,335,923.10 and 259,549.80

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Solution

The fourth proportional to 890,615.40, 1,335,923.10 and 259,549.80 is: 389,324.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,615.40 : 1,335,923.10 = 259,549.80 : x
  2. Step 2: Convert to fraction form
    890,615.40/1,335,923.10 = 259,549.80/x
  3. Step 3: Cross multiply
    890,615.40x = 1,335,923.10 × 259,549.80
  4. Step 4: Simplify right side
    890,615.40x = 346,738,573,420.38
  5. Step 5: Solve for x
    x = 346,738,573,420.38/890,615.40
  6. Step 6: Final answer
    x = 389,324.70

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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.