Home / 768,723.54-1,152,085.14-312,783.43

Finding the Fourth Proportional to 768,723.54, 1,152,085.14 and 312,783.43

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Solution

The fourth proportional to 768,723.54, 1,152,085.14 and 312,783.43 is: 468,768.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,723.54 : 1,152,085.14 = 312,783.43 : x
  2. Step 2: Convert to fraction form
    768,723.54/1,152,085.14 = 312,783.43/x
  3. Step 3: Cross multiply
    768,723.54x = 1,152,085.14 × 312,783.43
  4. Step 4: Simplify right side
    768,723.54x = 360,353,143,181.34
  5. Step 5: Solve for x
    x = 360,353,143,181.34/768,723.54
  6. Step 6: Final answer
    x = 468,768.19

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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.