Home / 763,734.72-1,145,749.58-290,383.28

Finding the Fourth Proportional to 763,734.72, 1,145,749.58 and 290,383.28

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Solution

The fourth proportional to 763,734.72, 1,145,749.58 and 290,383.28 is: 435,630.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,734.72 : 1,145,749.58 = 290,383.28 : x
  2. Step 2: Convert to fraction form
    763,734.72/1,145,749.58 = 290,383.28/x
  3. Step 3: Cross multiply
    763,734.72x = 1,145,749.58 × 290,383.28
  4. Step 4: Simplify right side
    763,734.72x = 332,706,513,918.36
  5. Step 5: Solve for x
    x = 332,706,513,918.36/763,734.72
  6. Step 6: Final answer
    x = 435,630.99

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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.