Home / 991,986.80-1,369,048.82-562,220.79

Finding the Fourth Proportional to 991,986.80, 1,369,048.82 and 562,220.79

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Solution

The fourth proportional to 991,986.80, 1,369,048.82 and 562,220.79 is: 775,925.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    991,986.80 : 1,369,048.82 = 562,220.79 : x
  2. Step 2: Convert to fraction form
    991,986.80/1,369,048.82 = 562,220.79/x
  3. Step 3: Cross multiply
    991,986.80x = 1,369,048.82 × 562,220.79
  4. Step 4: Simplify right side
    991,986.80x = 769,707,706,317.86
  5. Step 5: Solve for x
    x = 769,707,706,317.86/991,986.80
  6. Step 6: Final answer
    x = 775,925.36

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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.