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Finding the Fourth Proportional to 646,622.76, 892,305.54 and 360,137.64

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Solution

The fourth proportional to 646,622.76, 892,305.54 and 360,137.64 is: 496,971.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,622.76 : 892,305.54 = 360,137.64 : x
  2. Step 2: Convert to fraction form
    646,622.76/892,305.54 = 360,137.64/x
  3. Step 3: Cross multiply
    646,622.76x = 892,305.54 × 360,137.64
  4. Step 4: Simplify right side
    646,622.76x = 321,352,811,334.53
  5. Step 5: Solve for x
    x = 321,352,811,334.53/646,622.76
  6. Step 6: Final answer
    x = 496,971.08

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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.