Home / 768,724.86-1,152,087.11-312,784.74

Finding the Fourth Proportional to 768,724.86, 1,152,087.11 and 312,784.74

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Solution

The fourth proportional to 768,724.86, 1,152,087.11 and 312,784.74 is: 468,770.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    768,724.86 : 1,152,087.11 = 312,784.74 : x
  2. Step 2: Convert to fraction form
    768,724.86/1,152,087.11 = 312,784.74/x
  3. Step 3: Cross multiply
    768,724.86x = 1,152,087.11 × 312,784.74
  4. Step 4: Simplify right side
    768,724.86x = 360,355,267,158.70
  5. Step 5: Solve for x
    x = 360,355,267,158.70/768,724.86
  6. Step 6: Final answer
    x = 468,770.15

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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.