Home / 621,925.10-858,180.26-392,395.80

Finding the Fourth Proportional to 621,925.10, 858,180.26 and 392,395.80

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Solution

The fourth proportional to 621,925.10, 858,180.26 and 392,395.80 is: 541,458.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,925.10 : 858,180.26 = 392,395.80 : x
  2. Step 2: Convert to fraction form
    621,925.10/858,180.26 = 392,395.80/x
  3. Step 3: Cross multiply
    621,925.10x = 858,180.26 × 392,395.80
  4. Step 4: Simplify right side
    621,925.10x = 336,746,329,666.91
  5. Step 5: Solve for x
    x = 336,746,329,666.91/621,925.10
  6. Step 6: Final answer
    x = 541,458.01

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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.