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Finding the Fourth Proportional to 716,175.44, 988,328.80 and 389,491.44

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Solution

The fourth proportional to 716,175.44, 988,328.80 and 389,491.44 is: 537,501.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,175.44 : 988,328.80 = 389,491.44 : x
  2. Step 2: Convert to fraction form
    716,175.44/988,328.80 = 389,491.44/x
  3. Step 3: Cross multiply
    716,175.44x = 988,328.80 × 389,491.44
  4. Step 4: Simplify right side
    716,175.44x = 384,945,607,505.47
  5. Step 5: Solve for x
    x = 384,945,607,505.47/716,175.44
  6. Step 6: Final answer
    x = 537,501.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.