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Finding the Fourth Proportional to 1,185,796, 1,778,698.50 and 287,236

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Solution

The fourth proportional to 1,185,796, 1,778,698.50 and 287,236 is: 430,855.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,796 : 1,778,698.50 = 287,236 : x
  2. Step 2: Convert to fraction form
    1,185,796/1,778,698.50 = 287,236/x
  3. Step 3: Cross multiply
    1,185,796x = 1,778,698.50 × 287,236
  4. Step 4: Simplify right side
    1,185,796x = 510,906,242,346
  5. Step 5: Solve for x
    x = 510,906,242,346/1,185,796
  6. Step 6: Final answer
    x = 430,855.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.