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Finding the Fourth Proportional to 1,659,157.76, 2,289,763.68 and 1,005,973.76

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Solution

The fourth proportional to 1,659,157.76, 2,289,763.68 and 1,005,973.76 is: 1,388,320.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,659,157.76 : 2,289,763.68 = 1,005,973.76 : x
  2. Step 2: Convert to fraction form
    1,659,157.76/2,289,763.68 = 1,005,973.76/x
  3. Step 3: Cross multiply
    1,659,157.76x = 2,289,763.68 × 1,005,973.76
  4. Step 4: Simplify right side
    1,659,157.76x = 2,303,442,178,681.04
  5. Step 5: Solve for x
    x = 2,303,442,178,681.04/1,659,157.76
  6. Step 6: Final answer
    x = 1,388,320.17

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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.