Home / 691,259.10-1,036,888.65-192,623.10

Finding the Fourth Proportional to 691,259.10, 1,036,888.65 and 192,623.10

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Solution

The fourth proportional to 691,259.10, 1,036,888.65 and 192,623.10 is: 288,934.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    691,259.10 : 1,036,888.65 = 192,623.10 : x
  2. Step 2: Convert to fraction form
    691,259.10/1,036,888.65 = 192,623.10/x
  3. Step 3: Cross multiply
    691,259.10x = 1,036,888.65 × 192,623.10
  4. Step 4: Simplify right side
    691,259.10x = 199,728,706,117.82
  5. Step 5: Solve for x
    x = 199,728,706,117.82/691,259.10
  6. Step 6: Final answer
    x = 288,934.65

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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.