Home / 1,339,939.20-2,009,275.20-779,145.60

Finding the Fourth Proportional to 1,339,939.20, 2,009,275.20 and 779,145.60

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Solution

The fourth proportional to 1,339,939.20, 2,009,275.20 and 779,145.60 is: 1,168,349.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339,939.20 : 2,009,275.20 = 779,145.60 : x
  2. Step 2: Convert to fraction form
    1,339,939.20/2,009,275.20 = 779,145.60/x
  3. Step 3: Cross multiply
    1,339,939.20x = 2,009,275.20 × 779,145.60
  4. Step 4: Simplify right side
    1,339,939.20x = 1,565,517,931,269.12
  5. Step 5: Solve for x
    x = 1,565,517,931,269.12/1,339,939.20
  6. Step 6: Final answer
    x = 1,168,349.98

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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.