Home / 813,478.55-1,219,496.11-307,685.59

Finding the Fourth Proportional to 813,478.55, 1,219,496.11 and 307,685.59

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Solution

The fourth proportional to 813,478.55, 1,219,496.11 and 307,685.59 is: 461,255.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    813,478.55 : 1,219,496.11 = 307,685.59 : x
  2. Step 2: Convert to fraction form
    813,478.55/1,219,496.11 = 307,685.59/x
  3. Step 3: Cross multiply
    813,478.55x = 1,219,496.11 × 307,685.59
  4. Step 4: Simplify right side
    813,478.55x = 375,221,376,290.10
  5. Step 5: Solve for x
    x = 375,221,376,290.10/813,478.55
  6. Step 6: Final answer
    x = 461,255.41

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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.