Home / 1,128,087.90-1,691,290.29-678,703.48

Finding the Fourth Proportional to 1,128,087.90, 1,691,290.29 and 678,703.48

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Solution

The fourth proportional to 1,128,087.90, 1,691,290.29 and 678,703.48 is: 1,017,548.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,128,087.90 : 1,691,290.29 = 678,703.48 : x
  2. Step 2: Convert to fraction form
    1,128,087.90/1,691,290.29 = 678,703.48/x
  3. Step 3: Cross multiply
    1,128,087.90x = 1,691,290.29 × 678,703.48
  4. Step 4: Simplify right side
    1,128,087.90x = 1,147,884,597,056.76
  5. Step 5: Solve for x
    x = 1,147,884,597,056.76/1,128,087.90
  6. Step 6: Final answer
    x = 1,017,548.90

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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.