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Finding the Fourth Proportional to 646,879.04, 892,687.20 and 360,393.92

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Solution

The fourth proportional to 646,879.04, 892,687.20 and 360,393.92 is: 497,340.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,879.04 : 892,687.20 = 360,393.92 : x
  2. Step 2: Convert to fraction form
    646,879.04/892,687.20 = 360,393.92/x
  3. Step 3: Cross multiply
    646,879.04x = 892,687.20 × 360,393.92
  4. Step 4: Simplify right side
    646,879.04x = 321,719,039,341.82
  5. Step 5: Solve for x
    x = 321,719,039,341.82/646,879.04
  6. Step 6: Final answer
    x = 497,340.34

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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.