Home / 718,916.86-992,098.42-396,629.56

Finding the Fourth Proportional to 718,916.86, 992,098.42 and 396,629.56

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Solution

The fourth proportional to 718,916.86, 992,098.42 and 396,629.56 is: 547,345.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,916.86 : 992,098.42 = 396,629.56 : x
  2. Step 2: Convert to fraction form
    718,916.86/992,098.42 = 396,629.56/x
  3. Step 3: Cross multiply
    718,916.86x = 992,098.42 × 396,629.56
  4. Step 4: Simplify right side
    718,916.86x = 393,495,559,801.30
  5. Step 5: Solve for x
    x = 393,495,559,801.30/718,916.86
  6. Step 6: Final answer
    x = 547,345.02

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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.