Home / 921,036.30-1,381,554.45-415,839.30

Finding the Fourth Proportional to 921,036.30, 1,381,554.45 and 415,839.30

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Solution

The fourth proportional to 921,036.30, 1,381,554.45 and 415,839.30 is: 623,758.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,036.30 : 1,381,554.45 = 415,839.30 : x
  2. Step 2: Convert to fraction form
    921,036.30/1,381,554.45 = 415,839.30/x
  3. Step 3: Cross multiply
    921,036.30x = 1,381,554.45 × 415,839.30
  4. Step 4: Simplify right side
    921,036.30x = 574,504,635,399.89
  5. Step 5: Solve for x
    x = 574,504,635,399.89/921,036.30
  6. Step 6: Final answer
    x = 623,758.95

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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.