Home / 1,308,087.40-1,962,131.10-860,189.80

Finding the Fourth Proportional to 1,308,087.40, 1,962,131.10 and 860,189.80

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Solution

The fourth proportional to 1,308,087.40, 1,962,131.10 and 860,189.80 is: 1,290,284.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,308,087.40 : 1,962,131.10 = 860,189.80 : x
  2. Step 2: Convert to fraction form
    1,308,087.40/1,962,131.10 = 860,189.80/x
  3. Step 3: Cross multiply
    1,308,087.40x = 1,962,131.10 × 860,189.80
  4. Step 4: Simplify right side
    1,308,087.40x = 1,687,805,158,482.78
  5. Step 5: Solve for x
    x = 1,687,805,158,482.78/1,308,087.40
  6. Step 6: Final answer
    x = 1,290,284.70

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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.