Home / 638,041.27-957,199.20-318,365.05

Finding the Fourth Proportional to 638,041.27, 957,199.20 and 318,365.05

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Solution

The fourth proportional to 638,041.27, 957,199.20 and 318,365.05 is: 477,616.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,041.27 : 957,199.20 = 318,365.05 : x
  2. Step 2: Convert to fraction form
    638,041.27/957,199.20 = 318,365.05/x
  3. Step 3: Cross multiply
    638,041.27x = 957,199.20 × 318,365.05
  4. Step 4: Simplify right side
    638,041.27x = 304,738,771,167.96
  5. Step 5: Solve for x
    x = 304,738,771,167.96/638,041.27
  6. Step 6: Final answer
    x = 477,616.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.