Home / 1,131,728.79-1,561,798.76-622,439.67

Finding the Fourth Proportional to 1,131,728.79, 1,561,798.76 and 622,439.67

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Solution

The fourth proportional to 1,131,728.79, 1,561,798.76 and 622,439.67 is: 858,973.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,728.79 : 1,561,798.76 = 622,439.67 : x
  2. Step 2: Convert to fraction form
    1,131,728.79/1,561,798.76 = 622,439.67/x
  3. Step 3: Cross multiply
    1,131,728.79x = 1,561,798.76 × 622,439.67
  4. Step 4: Simplify right side
    1,131,728.79x = 972,125,501,668.61
  5. Step 5: Solve for x
    x = 972,125,501,668.61/1,131,728.79
  6. Step 6: Final answer
    x = 858,973.91

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1.5x scale

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.