Home / 716,398.10-988,590.38-394,056.17

Finding the Fourth Proportional to 716,398.10, 988,590.38 and 394,056.17

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Solution

The fourth proportional to 716,398.10, 988,590.38 and 394,056.17 is: 543,776.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,398.10 : 988,590.38 = 394,056.17 : x
  2. Step 2: Convert to fraction form
    716,398.10/988,590.38 = 394,056.17/x
  3. Step 3: Cross multiply
    716,398.10x = 988,590.38 × 394,056.17
  4. Step 4: Simplify right side
    716,398.10x = 389,560,131,928.41
  5. Step 5: Solve for x
    x = 389,560,131,928.41/716,398.10
  6. Step 6: Final answer
    x = 543,776.06

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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.