Home / 440,780.31-661,170.58-290,985.55

Finding the Fourth Proportional to 440,780.31, 661,170.58 and 290,985.55

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Solution

The fourth proportional to 440,780.31, 661,170.58 and 290,985.55 is: 436,478.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,780.31 : 661,170.58 = 290,985.55 : x
  2. Step 2: Convert to fraction form
    440,780.31/661,170.58 = 290,985.55/x
  3. Step 3: Cross multiply
    440,780.31x = 661,170.58 × 290,985.55
  4. Step 4: Simplify right side
    440,780.31x = 192,391,082,484.73
  5. Step 5: Solve for x
    x = 192,391,082,484.73/440,780.31
  6. Step 6: Final answer
    x = 436,478.40

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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.