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Finding the Fourth Proportional to 623,788.62, 860,827.26 and 351,855.66

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Solution

The fourth proportional to 623,788.62, 860,827.26 and 351,855.66 is: 485,560.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,788.62 : 860,827.26 = 351,855.66 : x
  2. Step 2: Convert to fraction form
    623,788.62/860,827.26 = 351,855.66/x
  3. Step 3: Cross multiply
    623,788.62x = 860,827.26 × 351,855.66
  4. Step 4: Simplify right side
    623,788.62x = 302,886,943,713.29
  5. Step 5: Solve for x
    x = 302,886,943,713.29/623,788.62
  6. Step 6: Final answer
    x = 485,560.23

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.