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Finding the Fourth Proportional to 623,426.25, 860,311.02 and 351,491.77

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Solution

The fourth proportional to 623,426.25, 860,311.02 and 351,491.77 is: 485,048.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,426.25 : 860,311.02 = 351,491.77 : x
  2. Step 2: Convert to fraction form
    623,426.25/860,311.02 = 351,491.77/x
  3. Step 3: Cross multiply
    623,426.25x = 860,311.02 × 351,491.77
  4. Step 4: Simplify right side
    623,426.25x = 302,392,245,563.79
  5. Step 5: Solve for x
    x = 302,392,245,563.79/623,426.25
  6. Step 6: Final answer
    x = 485,048.94

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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.