Home / 807,828.40-1,211,742.60-409,697.20

Finding the Fourth Proportional to 807,828.40, 1,211,742.60 and 409,697.20

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Solution

The fourth proportional to 807,828.40, 1,211,742.60 and 409,697.20 is: 614,545.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,828.40 : 1,211,742.60 = 409,697.20 : x
  2. Step 2: Convert to fraction form
    807,828.40/1,211,742.60 = 409,697.20/x
  3. Step 3: Cross multiply
    807,828.40x = 1,211,742.60 × 409,697.20
  4. Step 4: Simplify right side
    807,828.40x = 496,447,550,340.72
  5. Step 5: Solve for x
    x = 496,447,550,340.72/807,828.40
  6. Step 6: Final answer
    x = 614,545.80

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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.