Home / 716,240.08-988,411.83-393,974.70

Finding the Fourth Proportional to 716,240.08, 988,411.83 and 393,974.70

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Solution

The fourth proportional to 716,240.08, 988,411.83 and 393,974.70 is: 543,685.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,240.08 : 988,411.83 = 393,974.70 : x
  2. Step 2: Convert to fraction form
    716,240.08/988,411.83 = 393,974.70/x
  3. Step 3: Cross multiply
    716,240.08x = 988,411.83 × 393,974.70
  4. Step 4: Simplify right side
    716,240.08x = 389,409,254,200.70
  5. Step 5: Solve for x
    x = 389,409,254,200.70/716,240.08
  6. Step 6: Final answer
    x = 543,685.37

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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.