Home / 718,916.11-992,097.39-396,628.81

Finding the Fourth Proportional to 718,916.11, 992,097.39 and 396,628.81

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Solution

The fourth proportional to 718,916.11, 992,097.39 and 396,628.81 is: 547,343.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,916.11 : 992,097.39 = 396,628.81 : x
  2. Step 2: Convert to fraction form
    718,916.11/992,097.39 = 396,628.81/x
  3. Step 3: Cross multiply
    718,916.11x = 992,097.39 × 396,628.81
  4. Step 4: Simplify right side
    718,916.11x = 393,494,407,199.81
  5. Step 5: Solve for x
    x = 393,494,407,199.81/718,916.11
  6. Step 6: Final answer
    x = 547,343.98

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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.