Home / 617,985.78-926,745.39-285,328.50

Finding the Fourth Proportional to 617,985.78, 926,745.39 and 285,328.50

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Solution

The fourth proportional to 617,985.78, 926,745.39 and 285,328.50 is: 427,885.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,985.78 : 926,745.39 = 285,328.50 : x
  2. Step 2: Convert to fraction form
    617,985.78/926,745.39 = 285,328.50/x
  3. Step 3: Cross multiply
    617,985.78x = 926,745.39 × 285,328.50
  4. Step 4: Simplify right side
    617,985.78x = 264,426,872,010.62
  5. Step 5: Solve for x
    x = 264,426,872,010.62/617,985.78
  6. Step 6: Final answer
    x = 427,885.04

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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.