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Finding the Fourth Proportional to 1,412,903.03, 1,949,857.47 and 809,407.67

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Solution

The fourth proportional to 1,412,903.03, 1,949,857.47 and 809,407.67 is: 1,117,011.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,412,903.03 : 1,949,857.47 = 809,407.67 : x
  2. Step 2: Convert to fraction form
    1,412,903.03/1,949,857.47 = 809,407.67/x
  3. Step 3: Cross multiply
    1,412,903.03x = 1,949,857.47 × 809,407.67
  4. Step 4: Simplify right side
    1,412,903.03x = 1,578,229,581,875.51
  5. Step 5: Solve for x
    x = 1,578,229,581,875.51/1,412,903.03
  6. Step 6: Final answer
    x = 1,117,011.96

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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.