Home / 858,945.81-1,287,889.29-290,273.28

Finding the Fourth Proportional to 858,945.81, 1,287,889.29 and 290,273.28

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Solution

The fourth proportional to 858,945.81, 1,287,889.29 and 290,273.28 is: 435,231.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,945.81 : 1,287,889.29 = 290,273.28 : x
  2. Step 2: Convert to fraction form
    858,945.81/1,287,889.29 = 290,273.28/x
  3. Step 3: Cross multiply
    858,945.81x = 1,287,889.29 × 290,273.28
  4. Step 4: Simplify right side
    858,945.81x = 373,839,848,485.17
  5. Step 5: Solve for x
    x = 373,839,848,485.17/858,945.81
  6. Step 6: Final answer
    x = 435,231.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.