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Finding the Fourth Proportional to 988,891.88, 1,483,395.22 and 381,683.57

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Solution

The fourth proportional to 988,891.88, 1,483,395.22 and 381,683.57 is: 572,547.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    988,891.88 : 1,483,395.22 = 381,683.57 : x
  2. Step 2: Convert to fraction form
    988,891.88/1,483,395.22 = 381,683.57/x
  3. Step 3: Cross multiply
    988,891.88x = 1,483,395.22 × 381,683.57
  4. Step 4: Simplify right side
    988,891.88x = 566,187,574,919.35
  5. Step 5: Solve for x
    x = 566,187,574,919.35/988,891.88
  6. Step 6: Final answer
    x = 572,547.50

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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.