Home / 1,189,315.69-1,641,256.51-645,451.34

Finding the Fourth Proportional to 1,189,315.69, 1,641,256.51 and 645,451.34

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Solution

The fourth proportional to 1,189,315.69, 1,641,256.51 and 645,451.34 is: 890,723.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,315.69 : 1,641,256.51 = 645,451.34 : x
  2. Step 2: Convert to fraction form
    1,189,315.69/1,641,256.51 = 645,451.34/x
  3. Step 3: Cross multiply
    1,189,315.69x = 1,641,256.51 × 645,451.34
  4. Step 4: Simplify right side
    1,189,315.69x = 1,059,351,213,663.22
  5. Step 5: Solve for x
    x = 1,059,351,213,663.22/1,189,315.69
  6. Step 6: Final answer
    x = 890,723.31

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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.