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Finding the Fourth Proportional to 620,012.20, 930,018.30 and 245,842.60

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Solution

The fourth proportional to 620,012.20, 930,018.30 and 245,842.60 is: 368,763.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,012.20 : 930,018.30 = 245,842.60 : x
  2. Step 2: Convert to fraction form
    620,012.20/930,018.30 = 245,842.60/x
  3. Step 3: Cross multiply
    620,012.20x = 930,018.30 × 245,842.60
  4. Step 4: Simplify right side
    620,012.20x = 228,638,116,919.58
  5. Step 5: Solve for x
    x = 228,638,116,919.58/620,012.20
  6. Step 6: Final answer
    x = 368,763.90

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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.