Home / 1,387,530.70-1,914,806.60-775,717.45

Finding the Fourth Proportional to 1,387,530.70, 1,914,806.60 and 775,717.45

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Solution

The fourth proportional to 1,387,530.70, 1,914,806.60 and 775,717.45 is: 1,070,498.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,530.70 : 1,914,806.60 = 775,717.45 : x
  2. Step 2: Convert to fraction form
    1,387,530.70/1,914,806.60 = 775,717.45/x
  3. Step 3: Cross multiply
    1,387,530.70x = 1,914,806.60 × 775,717.45
  4. Step 4: Simplify right side
    1,387,530.70x = 1,485,348,892,995.17
  5. Step 5: Solve for x
    x = 1,485,348,892,995.17/1,387,530.70
  6. Step 6: Final answer
    x = 1,070,498.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.