Home / 1,431,975.63-1,976,177.21-787,444.86

Finding the Fourth Proportional to 1,431,975.63, 1,976,177.21 and 787,444.86

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Solution

The fourth proportional to 1,431,975.63, 1,976,177.21 and 787,444.86 is: 1,086,701.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,975.63 : 1,976,177.21 = 787,444.86 : x
  2. Step 2: Convert to fraction form
    1,431,975.63/1,976,177.21 = 787,444.86/x
  3. Step 3: Cross multiply
    1,431,975.63x = 1,976,177.21 × 787,444.86
  4. Step 4: Simplify right side
    1,431,975.63x = 1,556,130,586,463.64
  5. Step 5: Solve for x
    x = 1,556,130,586,463.64/1,431,975.63
  6. Step 6: Final answer
    x = 1,086,701.86

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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.