Home / 427,683.12-640,246.50-258,692.04

Finding the Fourth Proportional to 427,683.12, 640,246.50 and 258,692.04

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Solution

The fourth proportional to 427,683.12, 640,246.50 and 258,692.04 is: 387,264.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,683.12 : 640,246.50 = 258,692.04 : x
  2. Step 2: Convert to fraction form
    427,683.12/640,246.50 = 258,692.04/x
  3. Step 3: Cross multiply
    427,683.12x = 640,246.50 × 258,692.04
  4. Step 4: Simplify right side
    427,683.12x = 165,626,673,187.86
  5. Step 5: Solve for x
    x = 165,626,673,187.86/427,683.12
  6. Step 6: Final answer
    x = 387,264.93

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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.