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Finding the Fourth Proportional to 1,205,658, 1,807,945.11 and 867,280.50

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Solution

The fourth proportional to 1,205,658, 1,807,945.11 and 867,280.50 is: 1,300,530.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,205,658 : 1,807,945.11 = 867,280.50 : x
  2. Step 2: Convert to fraction form
    1,205,658/1,807,945.11 = 867,280.50/x
  3. Step 3: Cross multiply
    1,205,658x = 1,807,945.11 × 867,280.50
  4. Step 4: Simplify right side
    1,205,658x = 1,567,995,538,973.36
  5. Step 5: Solve for x
    x = 1,567,995,538,973.36/1,205,658
  6. Step 6: Final answer
    x = 1,300,530.95

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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.