Home / 716,939.32-988,823.64-445,168.12

Finding the Fourth Proportional to 716,939.32, 988,823.64 and 445,168.12

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Solution

The fourth proportional to 716,939.32, 988,823.64 and 445,168.12 is: 613,988.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,939.32 : 988,823.64 = 445,168.12 : x
  2. Step 2: Convert to fraction form
    716,939.32/988,823.64 = 445,168.12/x
  3. Step 3: Cross multiply
    716,939.32x = 988,823.64 × 445,168.12
  4. Step 4: Simplify right side
    716,939.32x = 440,192,760,830.36
  5. Step 5: Solve for x
    x = 440,192,760,830.36/716,939.32
  6. Step 6: Final answer
    x = 613,988.87

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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.