Home / 728,784.96-1,005,720.62-406,494.81

Finding the Fourth Proportional to 728,784.96, 1,005,720.62 and 406,494.81

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Solution

The fourth proportional to 728,784.96, 1,005,720.62 and 406,494.81 is: 560,961.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,784.96 : 1,005,720.62 = 406,494.81 : x
  2. Step 2: Convert to fraction form
    728,784.96/1,005,720.62 = 406,494.81/x
  3. Step 3: Cross multiply
    728,784.96x = 1,005,720.62 × 406,494.81
  4. Step 4: Simplify right side
    728,784.96x = 408,820,210,307.51
  5. Step 5: Solve for x
    x = 408,820,210,307.51/728,784.96
  6. Step 6: Final answer
    x = 560,961.37

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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.