Home / 859,561.16-1,289,384.55-327,123.45

Finding the Fourth Proportional to 859,561.16, 1,289,384.55 and 327,123.45

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Solution

The fourth proportional to 859,561.16, 1,289,384.55 and 327,123.45 is: 490,701.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,561.16 : 1,289,384.55 = 327,123.45 : x
  2. Step 2: Convert to fraction form
    859,561.16/1,289,384.55 = 327,123.45/x
  3. Step 3: Cross multiply
    859,561.16x = 1,289,384.55 × 327,123.45
  4. Step 4: Simplify right side
    859,561.16x = 421,787,922,372.70
  5. Step 5: Solve for x
    x = 421,787,922,372.70/859,561.16
  6. Step 6: Final answer
    x = 490,701.47

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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.