Home / 768,723.86-1,152,085.61-312,783.74

Finding the Fourth Proportional to 768,723.86, 1,152,085.61 and 312,783.74

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Solution

The fourth proportional to 768,723.86, 1,152,085.61 and 312,783.74 is: 468,768.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,723.86 : 1,152,085.61 = 312,783.74 : x
  2. Step 2: Convert to fraction form
    768,723.86/1,152,085.61 = 312,783.74/x
  3. Step 3: Cross multiply
    768,723.86x = 1,152,085.61 × 312,783.74
  4. Step 4: Simplify right side
    768,723.86x = 360,353,645,895.98
  5. Step 5: Solve for x
    x = 360,353,645,895.98/768,723.86
  6. Step 6: Final answer
    x = 468,768.65

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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.