Home / 738,164.20-1,018,666.58-398,632.42

Finding the Fourth Proportional to 738,164.20, 1,018,666.58 and 398,632.42

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Solution

The fourth proportional to 738,164.20, 1,018,666.58 and 398,632.42 is: 550,112.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    738,164.20 : 1,018,666.58 = 398,632.42 : x
  2. Step 2: Convert to fraction form
    738,164.20/1,018,666.58 = 398,632.42/x
  3. Step 3: Cross multiply
    738,164.20x = 1,018,666.58 × 398,632.42
  4. Step 4: Simplify right side
    738,164.20x = 406,073,523,958.52
  5. Step 5: Solve for x
    x = 406,073,523,958.52/738,164.20
  6. Step 6: Final answer
    x = 550,112.73

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Double scale
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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.