Home / 1,123,291.20-1,684,936.80-698,138.40

Finding the Fourth Proportional to 1,123,291.20, 1,684,936.80 and 698,138.40

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Solution

The fourth proportional to 1,123,291.20, 1,684,936.80 and 698,138.40 is: 1,047,207.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,123,291.20 : 1,684,936.80 = 698,138.40 : x
  2. Step 2: Convert to fraction form
    1,123,291.20/1,684,936.80 = 698,138.40/x
  3. Step 3: Cross multiply
    1,123,291.20x = 1,684,936.80 × 698,138.40
  4. Step 4: Simplify right side
    1,123,291.20x = 1,176,319,081,653.12
  5. Step 5: Solve for x
    x = 1,176,319,081,653.12/1,123,291.20
  6. Step 6: Final answer
    x = 1,047,207.60

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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.