Home / 1,318,859.51-1,975,189.12-642,822.23

Finding the Fourth Proportional to 1,318,859.51, 1,975,189.12 and 642,822.23

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Solution

The fourth proportional to 1,318,859.51, 1,975,189.12 and 642,822.23 is: 962,722.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,318,859.51 : 1,975,189.12 = 642,822.23 : x
  2. Step 2: Convert to fraction form
    1,318,859.51/1,975,189.12 = 642,822.23/x
  3. Step 3: Cross multiply
    1,318,859.51x = 1,975,189.12 × 642,822.23
  4. Step 4: Simplify right side
    1,318,859.51x = 1,269,695,478,121.06
  5. Step 5: Solve for x
    x = 1,269,695,478,121.06/1,318,859.51
  6. Step 6: Final answer
    x = 962,722.32

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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.