Home / 716,161.32-988,283.46-393,904.36

Finding the Fourth Proportional to 716,161.32, 988,283.46 and 393,904.36

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Solution

The fourth proportional to 716,161.32, 988,283.46 and 393,904.36 is: 543,577.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,161.32 : 988,283.46 = 393,904.36 : x
  2. Step 2: Convert to fraction form
    716,161.32/988,283.46 = 393,904.36/x
  3. Step 3: Cross multiply
    716,161.32x = 988,283.46 × 393,904.36
  4. Step 4: Simplify right side
    716,161.32x = 389,289,163,809.89
  5. Step 5: Solve for x
    x = 389,289,163,809.89/716,161.32
  6. Step 6: Final answer
    x = 543,577.48

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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.