Home / 812,076.30-1,218,114.45-497,148.30

Finding the Fourth Proportional to 812,076.30, 1,218,114.45 and 497,148.30

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Solution

The fourth proportional to 812,076.30, 1,218,114.45 and 497,148.30 is: 745,722.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,076.30 : 1,218,114.45 = 497,148.30 : x
  2. Step 2: Convert to fraction form
    812,076.30/1,218,114.45 = 497,148.30/x
  3. Step 3: Cross multiply
    812,076.30x = 1,218,114.45 × 497,148.30
  4. Step 4: Simplify right side
    812,076.30x = 605,583,528,022.94
  5. Step 5: Solve for x
    x = 605,583,528,022.94/812,076.30
  6. Step 6: Final answer
    x = 745,722.45

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Half scale
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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.