Home / 1,138,698.80-1,706,881.80-665,140.40

Finding the Fourth Proportional to 1,138,698.80, 1,706,881.80 and 665,140.40

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Solution

The fourth proportional to 1,138,698.80, 1,706,881.80 and 665,140.40 is: 997,029.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,698.80 : 1,706,881.80 = 665,140.40 : x
  2. Step 2: Convert to fraction form
    1,138,698.80/1,706,881.80 = 665,140.40/x
  3. Step 3: Cross multiply
    1,138,698.80x = 1,706,881.80 × 665,140.40
  4. Step 4: Simplify right side
    1,138,698.80x = 1,135,316,043,204.72
  5. Step 5: Solve for x
    x = 1,135,316,043,204.72/1,138,698.80
  6. Step 6: Final answer
    x = 997,029.28

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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.