Home / 738,163.45-1,018,665.55-398,631.67

Finding the Fourth Proportional to 738,163.45, 1,018,665.55 and 398,631.67

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Solution

The fourth proportional to 738,163.45, 1,018,665.55 and 398,631.67 is: 550,111.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,163.45 : 1,018,665.55 = 398,631.67 : x
  2. Step 2: Convert to fraction form
    738,163.45/1,018,665.55 = 398,631.67/x
  3. Step 3: Cross multiply
    738,163.45x = 1,018,665.55 × 398,631.67
  4. Step 4: Simplify right side
    738,163.45x = 406,072,349,367.97
  5. Step 5: Solve for x
    x = 406,072,349,367.97/738,163.45
  6. Step 6: Final answer
    x = 550,111.70

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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.