Home / 889,401.60-1,334,102.40-489,836.70

Finding the Fourth Proportional to 889,401.60, 1,334,102.40 and 489,836.70

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Solution

The fourth proportional to 889,401.60, 1,334,102.40 and 489,836.70 is: 734,755.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    889,401.60 : 1,334,102.40 = 489,836.70 : x
  2. Step 2: Convert to fraction form
    889,401.60/1,334,102.40 = 489,836.70/x
  3. Step 3: Cross multiply
    889,401.60x = 1,334,102.40 × 489,836.70
  4. Step 4: Simplify right side
    889,401.60x = 653,492,317,078.08
  5. Step 5: Solve for x
    x = 653,492,317,078.08/889,401.60
  6. Step 6: Final answer
    x = 734,755.05

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Double scale
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Similar ratio
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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.