Home / 885,138.60-1,328,139.90-411,580.20

Finding the Fourth Proportional to 885,138.60, 1,328,139.90 and 411,580.20

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Solution

The fourth proportional to 885,138.60, 1,328,139.90 and 411,580.20 is: 617,571.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,138.60 : 1,328,139.90 = 411,580.20 : x
  2. Step 2: Convert to fraction form
    885,138.60/1,328,139.90 = 411,580.20/x
  3. Step 3: Cross multiply
    885,138.60x = 1,328,139.90 × 411,580.20
  4. Step 4: Simplify right side
    885,138.60x = 546,636,085,669.98
  5. Step 5: Solve for x
    x = 546,636,085,669.98/885,138.60
  6. Step 6: Final answer
    x = 617,571.18

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1.5x scale

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.