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Finding the Fourth Proportional to 623,431.63, 860,318.44 and 351,497.15

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Solution

The fourth proportional to 623,431.63, 860,318.44 and 351,497.15 is: 485,056.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    623,431.63 : 860,318.44 = 351,497.15 : x
  2. Step 2: Convert to fraction form
    623,431.63/860,318.44 = 351,497.15/x
  3. Step 3: Cross multiply
    623,431.63x = 860,318.44 × 351,497.15
  4. Step 4: Simplify right side
    623,431.63x = 302,399,479,752.45
  5. Step 5: Solve for x
    x = 302,399,479,752.45/623,431.63
  6. Step 6: Final answer
    x = 485,056.36

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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.