Home / 728,011.59-1,004,685.03-405,718.80

Finding the Fourth Proportional to 728,011.59, 1,004,685.03 and 405,718.80

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Solution

The fourth proportional to 728,011.59, 1,004,685.03 and 405,718.80 is: 559,908.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,011.59 : 1,004,685.03 = 405,718.80 : x
  2. Step 2: Convert to fraction form
    728,011.59/1,004,685.03 = 405,718.80/x
  3. Step 3: Cross multiply
    728,011.59x = 1,004,685.03 × 405,718.80
  4. Step 4: Simplify right side
    728,011.59x = 407,619,604,749.56
  5. Step 5: Solve for x
    x = 407,619,604,749.56/728,011.59
  6. Step 6: Final answer
    x = 559,908.13

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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.