Home / 1,138,980.80-1,708,730.40-665,422.40

Finding the Fourth Proportional to 1,138,980.80, 1,708,730.40 and 665,422.40

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Solution

The fourth proportional to 1,138,980.80, 1,708,730.40 and 665,422.40 is: 998,285.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,980.80 : 1,708,730.40 = 665,422.40 : x
  2. Step 2: Convert to fraction form
    1,138,980.80/1,708,730.40 = 665,422.40/x
  3. Step 3: Cross multiply
    1,138,980.80x = 1,708,730.40 × 665,422.40
  4. Step 4: Simplify right side
    1,138,980.80x = 1,137,027,483,720.96
  5. Step 5: Solve for x
    x = 1,137,027,483,720.96/1,138,980.80
  6. Step 6: Final answer
    x = 998,285.03

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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.