Home / 718,899.46-992,075.71-396,623.14

Finding the Fourth Proportional to 718,899.46, 992,075.71 and 396,623.14

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Solution

The fourth proportional to 718,899.46, 992,075.71 and 396,623.14 is: 547,336.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,899.46 : 992,075.71 = 396,623.14 : x
  2. Step 2: Convert to fraction form
    718,899.46/992,075.71 = 396,623.14/x
  3. Step 3: Cross multiply
    718,899.46x = 992,075.71 × 396,623.14
  4. Step 4: Simplify right side
    718,899.46x = 393,480,183,217.93
  5. Step 5: Solve for x
    x = 393,480,183,217.93/718,899.46
  6. Step 6: Final answer
    x = 547,336.87

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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.