Home / 738,160.45-1,018,661.41-398,628.67

Finding the Fourth Proportional to 738,160.45, 1,018,661.41 and 398,628.67

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Solution

The fourth proportional to 738,160.45, 1,018,661.41 and 398,628.67 is: 550,107.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,160.45 : 1,018,661.41 = 398,628.67 : x
  2. Step 2: Convert to fraction form
    738,160.45/1,018,661.41 = 398,628.67/x
  3. Step 3: Cross multiply
    738,160.45x = 1,018,661.41 × 398,628.67
  4. Step 4: Simplify right side
    738,160.45x = 406,067,643,048.63
  5. Step 5: Solve for x
    x = 406,067,643,048.63/738,160.45
  6. Step 6: Final answer
    x = 550,107.56

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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.