Home / 1,086,979.80-1,630,469.70-686,321.40

Finding the Fourth Proportional to 1,086,979.80, 1,630,469.70 and 686,321.40

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Solution

The fourth proportional to 1,086,979.80, 1,630,469.70 and 686,321.40 is: 1,029,482.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,979.80 : 1,630,469.70 = 686,321.40 : x
  2. Step 2: Convert to fraction form
    1,086,979.80/1,630,469.70 = 686,321.40/x
  3. Step 3: Cross multiply
    1,086,979.80x = 1,630,469.70 × 686,321.40
  4. Step 4: Simplify right side
    1,086,979.80x = 1,119,026,247,161.58
  5. Step 5: Solve for x
    x = 1,119,026,247,161.58/1,086,979.80
  6. Step 6: Final answer
    x = 1,029,482.10

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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.