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Finding the Fourth Proportional to 1,262,849.92, 1,742,420.64 and 810,753.28

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Solution

The fourth proportional to 1,262,849.92, 1,742,420.64 and 810,753.28 is: 1,118,639.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262,849.92 : 1,742,420.64 = 810,753.28 : x
  2. Step 2: Convert to fraction form
    1,262,849.92/1,742,420.64 = 810,753.28/x
  3. Step 3: Cross multiply
    1,262,849.92x = 1,742,420.64 × 810,753.28
  4. Step 4: Simplify right side
    1,262,849.92x = 1,412,673,249,019.70
  5. Step 5: Solve for x
    x = 1,412,673,249,019.70/1,262,849.92
  6. Step 6: Final answer
    x = 1,118,639.06

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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.