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Finding the Fourth Proportional to 716,232, 988,418.86 and 393,950.55

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Solution

The fourth proportional to 716,232, 988,418.86 and 393,950.55 is: 543,662.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,232 : 988,418.86 = 393,950.55 : x
  2. Step 2: Convert to fraction form
    716,232/988,418.86 = 393,950.55/x
  3. Step 3: Cross multiply
    716,232x = 988,418.86 × 393,950.55
  4. Step 4: Simplify right side
    716,232x = 389,388,152,542.50
  5. Step 5: Solve for x
    x = 389,388,152,542.50/716,232
  6. Step 6: Final answer
    x = 543,662.04

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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.