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Finding the Fourth Proportional to 1,118,289.96, 1,677,928.64 and 867,747.24

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Solution

The fourth proportional to 1,118,289.96, 1,677,928.64 and 867,747.24 is: 1,302,003.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,118,289.96 : 1,677,928.64 = 867,747.24 : x
  2. Step 2: Convert to fraction form
    1,118,289.96/1,677,928.64 = 867,747.24/x
  3. Step 3: Cross multiply
    1,118,289.96x = 1,677,928.64 × 867,747.24
  4. Step 4: Simplify right side
    1,118,289.96x = 1,456,017,946,276.95
  5. Step 5: Solve for x
    x = 1,456,017,946,276.95/1,118,289.96
  6. Step 6: Final answer
    x = 1,302,003.95

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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.