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Finding the Fourth Proportional to 716,463.04, 988,718.88 and 394,166.16

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Solution

The fourth proportional to 716,463.04, 988,718.88 and 394,166.16 is: 543,949.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,463.04 : 988,718.88 = 394,166.16 : x
  2. Step 2: Convert to fraction form
    716,463.04/988,718.88 = 394,166.16/x
  3. Step 3: Cross multiply
    716,463.04x = 988,718.88 × 394,166.16
  4. Step 4: Simplify right side
    716,463.04x = 389,719,524,249.10
  5. Step 5: Solve for x
    x = 389,719,524,249.10/716,463.04
  6. Step 6: Final answer
    x = 543,949.24

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Double scale
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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.