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Finding the Fourth Proportional to 553,985.41, 764,498.67 and 299,336.60

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Solution

The fourth proportional to 553,985.41, 764,498.67 and 299,336.60 is: 413,083.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,985.41 : 764,498.67 = 299,336.60 : x
  2. Step 2: Convert to fraction form
    553,985.41/764,498.67 = 299,336.60/x
  3. Step 3: Cross multiply
    553,985.41x = 764,498.67 × 299,336.60
  4. Step 4: Simplify right side
    553,985.41x = 228,842,432,582.32
  5. Step 5: Solve for x
    x = 228,842,432,582.32/553,985.41
  6. Step 6: Final answer
    x = 413,083.86

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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.