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Finding the Fourth Proportional to 630,491.34, 945,745.27 and 209,767.22

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Solution

The fourth proportional to 630,491.34, 945,745.27 and 209,767.22 is: 314,653.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,491.34 : 945,745.27 = 209,767.22 : x
  2. Step 2: Convert to fraction form
    630,491.34/945,745.27 = 209,767.22/x
  3. Step 3: Cross multiply
    630,491.34x = 945,745.27 × 209,767.22
  4. Step 4: Simplify right side
    630,491.34x = 198,386,354,409.45
  5. Step 5: Solve for x
    x = 198,386,354,409.45/630,491.34
  6. Step 6: Final answer
    x = 314,653.57

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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.