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Finding the Fourth Proportional to 426,078.87, 637,952.51 and 414,785.45

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Solution

The fourth proportional to 426,078.87, 637,952.51 and 414,785.45 is: 621,043.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,078.87 : 637,952.51 = 414,785.45 : x
  2. Step 2: Convert to fraction form
    426,078.87/637,952.51 = 414,785.45/x
  3. Step 3: Cross multiply
    426,078.87x = 637,952.51 × 414,785.45
  4. Step 4: Simplify right side
    426,078.87x = 264,613,413,675.29
  5. Step 5: Solve for x
    x = 264,613,413,675.29/426,078.87
  6. Step 6: Final answer
    x = 621,043.27

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.