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Finding the Fourth Proportional to 1,152,964.80, 1,728,410.40 and 753,796.80

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Solution

The fourth proportional to 1,152,964.80, 1,728,410.40 and 753,796.80 is: 1,130,017.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,152,964.80 : 1,728,410.40 = 753,796.80 : x
  2. Step 2: Convert to fraction form
    1,152,964.80/1,728,410.40 = 753,796.80/x
  3. Step 3: Cross multiply
    1,152,964.80x = 1,728,410.40 × 753,796.80
  4. Step 4: Simplify right side
    1,152,964.80x = 1,302,870,228,606.72
  5. Step 5: Solve for x
    x = 1,302,870,228,606.72/1,152,964.80
  6. Step 6: Final answer
    x = 1,130,017.35

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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.