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Finding the Fourth Proportional to 646,699.68, 892,472.64 and 360,219.36

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Solution

The fourth proportional to 646,699.68, 892,472.64 and 360,219.36 is: 497,117.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,699.68 : 892,472.64 = 360,219.36 : x
  2. Step 2: Convert to fraction form
    646,699.68/892,472.64 = 360,219.36/x
  3. Step 3: Cross multiply
    646,699.68x = 892,472.64 × 360,219.36
  4. Step 4: Simplify right side
    646,699.68x = 321,485,923,198.31
  5. Step 5: Solve for x
    x = 321,485,923,198.31/646,699.68
  6. Step 6: Final answer
    x = 497,117.80

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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.