Home / 728,106.80-1,004,665.56-405,746.24

Finding the Fourth Proportional to 728,106.80, 1,004,665.56 and 405,746.24

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Solution

The fourth proportional to 728,106.80, 1,004,665.56 and 405,746.24 is: 559,861.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,106.80 : 1,004,665.56 = 405,746.24 : x
  2. Step 2: Convert to fraction form
    728,106.80/1,004,665.56 = 405,746.24/x
  3. Step 3: Cross multiply
    728,106.80x = 1,004,665.56 × 405,746.24
  4. Step 4: Simplify right side
    728,106.80x = 407,639,273,427.49
  5. Step 5: Solve for x
    x = 407,639,273,427.49/728,106.80
  6. Step 6: Final answer
    x = 559,861.92

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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.