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Finding the Fourth Proportional to 646,707.12, 892,471.44 and 360,231.88

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Solution

The fourth proportional to 646,707.12, 892,471.44 and 360,231.88 is: 497,128.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,707.12 : 892,471.44 = 360,231.88 : x
  2. Step 2: Convert to fraction form
    646,707.12/892,471.44 = 360,231.88/x
  3. Step 3: Cross multiply
    646,707.12x = 892,471.44 × 360,231.88
  4. Step 4: Simplify right side
    646,707.12x = 321,496,664,677.51
  5. Step 5: Solve for x
    x = 321,496,664,677.51/646,707.12
  6. Step 6: Final answer
    x = 497,128.69

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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.