Home / 1,625,421-2,437,937.36-427,436.64

Finding the Fourth Proportional to 1,625,421, 2,437,937.36 and 427,436.64

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Solution

The fourth proportional to 1,625,421, 2,437,937.36 and 427,436.64 is: 641,103.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,625,421 : 2,437,937.36 = 427,436.64 : x
  2. Step 2: Convert to fraction form
    1,625,421/2,437,937.36 = 427,436.64/x
  3. Step 3: Cross multiply
    1,625,421x = 2,437,937.36 × 427,436.64
  4. Step 4: Simplify right side
    1,625,421x = 1,042,063,753,688.87
  5. Step 5: Solve for x
    x = 1,042,063,753,688.87/1,625,421
  6. Step 6: Final answer
    x = 641,103.91

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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.