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Finding the Fourth Proportional to 1,235,964.80, 1,853,947.20 and 487,913.60

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Solution

The fourth proportional to 1,235,964.80, 1,853,947.20 and 487,913.60 is: 731,870.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,235,964.80 : 1,853,947.20 = 487,913.60 : x
  2. Step 2: Convert to fraction form
    1,235,964.80/1,853,947.20 = 487,913.60/x
  3. Step 3: Cross multiply
    1,235,964.80x = 1,853,947.20 × 487,913.60
  4. Step 4: Simplify right side
    1,235,964.80x = 904,566,052,561.92
  5. Step 5: Solve for x
    x = 904,566,052,561.92/1,235,964.80
  6. Step 6: Final answer
    x = 731,870.40

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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.