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Finding the Fourth Proportional to 1,262,616, 1,742,461.92 and 726,072

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Solution

The fourth proportional to 1,262,616, 1,742,461.92 and 726,072 is: 1,002,009.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,616 : 1,742,461.92 = 726,072 : x
  2. Step 2: Convert to fraction form
    1,262,616/1,742,461.92 = 726,072/x
  3. Step 3: Cross multiply
    1,262,616x = 1,742,461.92 × 726,072
  4. Step 4: Simplify right side
    1,262,616x = 1,265,152,811,178.24
  5. Step 5: Solve for x
    x = 1,265,152,811,178.24/1,262,616
  6. Step 6: Final answer
    x = 1,002,009.17

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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.