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Finding the Fourth Proportional to 623,446.74, 860,339.19 and 351,512.22

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Solution

The fourth proportional to 623,446.74, 860,339.19 and 351,512.22 is: 485,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,446.74 : 860,339.19 = 351,512.22 : x
  2. Step 2: Convert to fraction form
    623,446.74/860,339.19 = 351,512.22/x
  3. Step 3: Cross multiply
    623,446.74x = 860,339.19 × 351,512.22
  4. Step 4: Simplify right side
    623,446.74x = 302,419,738,629.90
  5. Step 5: Solve for x
    x = 302,419,738,629.90/623,446.74
  6. Step 6: Final answer
    x = 485,077.10

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.