Home / 728,097.48-1,004,779.20-405,828.05

Finding the Fourth Proportional to 728,097.48, 1,004,779.20 and 405,828.05

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Solution

The fourth proportional to 728,097.48, 1,004,779.20 and 405,828.05 is: 560,045.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,097.48 : 1,004,779.20 = 405,828.05 : x
  2. Step 2: Convert to fraction form
    728,097.48/1,004,779.20 = 405,828.05/x
  3. Step 3: Cross multiply
    728,097.48x = 1,004,779.20 × 405,828.05
  4. Step 4: Simplify right side
    728,097.48x = 407,767,578,392.66
  5. Step 5: Solve for x
    x = 407,767,578,392.66/728,097.48
  6. Step 6: Final answer
    x = 560,045.31

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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.