Home / 813,210.74-1,219,658.38-307,811.17

Finding the Fourth Proportional to 813,210.74, 1,219,658.38 and 307,811.17

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Solution

The fourth proportional to 813,210.74, 1,219,658.38 and 307,811.17 is: 461,657.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,210.74 : 1,219,658.38 = 307,811.17 : x
  2. Step 2: Convert to fraction form
    813,210.74/1,219,658.38 = 307,811.17/x
  3. Step 3: Cross multiply
    813,210.74x = 1,219,658.38 × 307,811.17
  4. Step 4: Simplify right side
    813,210.74x = 375,424,469,129.43
  5. Step 5: Solve for x
    x = 375,424,469,129.43/813,210.74
  6. Step 6: Final answer
    x = 461,657.05

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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.