Home / 764,306.50-1,146,975.39-315,017.42

Finding the Fourth Proportional to 764,306.50, 1,146,975.39 and 315,017.42

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Solution

The fourth proportional to 764,306.50, 1,146,975.39 and 315,017.42 is: 472,738.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,306.50 : 1,146,975.39 = 315,017.42 : x
  2. Step 2: Convert to fraction form
    764,306.50/1,146,975.39 = 315,017.42/x
  3. Step 3: Cross multiply
    764,306.50x = 1,146,975.39 × 315,017.42
  4. Step 4: Simplify right side
    764,306.50x = 361,317,224,039.35
  5. Step 5: Solve for x
    x = 361,317,224,039.35/764,306.50
  6. Step 6: Final answer
    x = 472,738.65

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Double scale
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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.