Home / 813,099.40-1,220,766.28-414,008.34

Finding the Fourth Proportional to 813,099.40, 1,220,766.28 and 414,008.34

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Solution

The fourth proportional to 813,099.40, 1,220,766.28 and 414,008.34 is: 621,581.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,099.40 : 1,220,766.28 = 414,008.34 : x
  2. Step 2: Convert to fraction form
    813,099.40/1,220,766.28 = 414,008.34/x
  3. Step 3: Cross multiply
    813,099.40x = 1,220,766.28 × 414,008.34
  4. Step 4: Simplify right side
    813,099.40x = 505,407,421,110.78
  5. Step 5: Solve for x
    x = 505,407,421,110.78/813,099.40
  6. Step 6: Final answer
    x = 621,581.35

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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.