Home / 487,629.87-672,569.78-352,111.20

Finding the Fourth Proportional to 487,629.87, 672,569.78 and 352,111.20

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Solution

The fourth proportional to 487,629.87, 672,569.78 and 352,111.20 is: 485,653.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,629.87 : 672,569.78 = 352,111.20 : x
  2. Step 2: Convert to fraction form
    487,629.87/672,569.78 = 352,111.20/x
  3. Step 3: Cross multiply
    487,629.87x = 672,569.78 × 352,111.20
  4. Step 4: Simplify right side
    487,629.87x = 236,819,350,558.98
  5. Step 5: Solve for x
    x = 236,819,350,558.98/487,629.87
  6. Step 6: Final answer
    x = 485,653.90

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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.