Home / 578,921.39-868,374.26-258,988.67

Finding the Fourth Proportional to 578,921.39, 868,374.26 and 258,988.67

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Solution

The fourth proportional to 578,921.39, 868,374.26 and 258,988.67 is: 388,479.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,921.39 : 868,374.26 = 258,988.67 : x
  2. Step 2: Convert to fraction form
    578,921.39/868,374.26 = 258,988.67/x
  3. Step 3: Cross multiply
    578,921.39x = 868,374.26 × 258,988.67
  4. Step 4: Simplify right side
    578,921.39x = 224,899,093,364.69
  5. Step 5: Solve for x
    x = 224,899,093,364.69/578,921.39
  6. Step 6: Final answer
    x = 388,479.50

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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.