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Finding the Fourth Proportional to 623,787.50, 860,825.72 and 351,854.57

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Solution

The fourth proportional to 623,787.50, 860,825.72 and 351,854.57 is: 485,558.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,787.50 : 860,825.72 = 351,854.57 : x
  2. Step 2: Convert to fraction form
    623,787.50/860,825.72 = 351,854.57/x
  3. Step 3: Cross multiply
    623,787.50x = 860,825.72 × 351,854.57
  4. Step 4: Simplify right side
    623,787.50x = 302,885,460,131.05
  5. Step 5: Solve for x
    x = 302,885,460,131.05/623,787.50
  6. Step 6: Final answer
    x = 485,558.72

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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.