Home / 639,406.41-882,280.25-367,421.67

Finding the Fourth Proportional to 639,406.41, 882,280.25 and 367,421.67

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Solution

The fourth proportional to 639,406.41, 882,280.25 and 367,421.67 is: 506,984.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,406.41 : 882,280.25 = 367,421.67 : x
  2. Step 2: Convert to fraction form
    639,406.41/882,280.25 = 367,421.67/x
  3. Step 3: Cross multiply
    639,406.41x = 882,280.25 × 367,421.67
  4. Step 4: Simplify right side
    639,406.41x = 324,168,882,403.74
  5. Step 5: Solve for x
    x = 324,168,882,403.74/639,406.41
  6. Step 6: Final answer
    x = 506,984.10

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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.