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Finding the Fourth Proportional to 1,664,437.60, 2,496,656.40 and 1,384,271.20

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Solution

The fourth proportional to 1,664,437.60, 2,496,656.40 and 1,384,271.20 is: 2,076,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664,437.60 : 2,496,656.40 = 1,384,271.20 : x
  2. Step 2: Convert to fraction form
    1,664,437.60/2,496,656.40 = 1,384,271.20/x
  3. Step 3: Cross multiply
    1,664,437.60x = 2,496,656.40 × 1,384,271.20
  4. Step 4: Simplify right side
    1,664,437.60x = 3,456,049,550,815.68
  5. Step 5: Solve for x
    x = 3,456,049,550,815.68/1,664,437.60
  6. Step 6: Final answer
    x = 2,076,406.80

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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.