Home / 1,428,474.55-1,970,986.93-824,512.63

Finding the Fourth Proportional to 1,428,474.55, 1,970,986.93 and 824,512.63

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Solution

The fourth proportional to 1,428,474.55, 1,970,986.93 and 824,512.63 is: 1,137,649.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,428,474.55 : 1,970,986.93 = 824,512.63 : x
  2. Step 2: Convert to fraction form
    1,428,474.55/1,970,986.93 = 824,512.63/x
  3. Step 3: Cross multiply
    1,428,474.55x = 1,970,986.93 × 824,512.63
  4. Step 4: Simplify right side
    1,428,474.55x = 1,625,103,617,349.93
  5. Step 5: Solve for x
    x = 1,625,103,617,349.93/1,428,474.55
  6. Step 6: Final answer
    x = 1,137,649.68

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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.