Home / 697,105.05-1,045,657.58-620,997.45

Finding the Fourth Proportional to 697,105.05, 1,045,657.58 and 620,997.45

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Solution

The fourth proportional to 697,105.05, 1,045,657.58 and 620,997.45 is: 931,496.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    697,105.05 : 1,045,657.58 = 620,997.45 : x
  2. Step 2: Convert to fraction form
    697,105.05/1,045,657.58 = 620,997.45/x
  3. Step 3: Cross multiply
    697,105.05x = 1,045,657.58 × 620,997.45
  4. Step 4: Simplify right side
    697,105.05x = 649,350,687,648.18
  5. Step 5: Solve for x
    x = 649,350,687,648.18/697,105.05
  6. Step 6: Final answer
    x = 931,496.18

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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.