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Finding the Fourth Proportional to 1,185,798, 1,778,701.50 and 287,238

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Solution

The fourth proportional to 1,185,798, 1,778,701.50 and 287,238 is: 430,858.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,185,798 : 1,778,701.50 = 287,238 : x
  2. Step 2: Convert to fraction form
    1,185,798/1,778,701.50 = 287,238/x
  3. Step 3: Cross multiply
    1,185,798x = 1,778,701.50 × 287,238
  4. Step 4: Simplify right side
    1,185,798x = 510,910,661,457
  5. Step 5: Solve for x
    x = 510,910,661,457/1,185,798
  6. Step 6: Final answer
    x = 430,858.09

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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.