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Finding the Fourth Proportional to 671,131.80, 926,162.01 and 369,325.80

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Solution

The fourth proportional to 671,131.80, 926,162.01 and 369,325.80 is: 509,669.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,131.80 : 926,162.01 = 369,325.80 : x
  2. Step 2: Convert to fraction form
    671,131.80/926,162.01 = 369,325.80/x
  3. Step 3: Cross multiply
    671,131.80x = 926,162.01 × 369,325.80
  4. Step 4: Simplify right side
    671,131.80x = 342,055,525,272.86
  5. Step 5: Solve for x
    x = 342,055,525,272.86/671,131.80
  6. Step 6: Final answer
    x = 509,669.67

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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.