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Finding the Fourth Proportional to 867,886.70, 1,301,246.85 and 394,328.30

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Solution

The fourth proportional to 867,886.70, 1,301,246.85 and 394,328.30 is: 591,227.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    867,886.70 : 1,301,246.85 = 394,328.30 : x
  2. Step 2: Convert to fraction form
    867,886.70/1,301,246.85 = 394,328.30/x
  3. Step 3: Cross multiply
    867,886.70x = 1,301,246.85 × 394,328.30
  4. Step 4: Simplify right side
    867,886.70x = 513,118,458,240.86
  5. Step 5: Solve for x
    x = 513,118,458,240.86/867,886.70
  6. Step 6: Final answer
    x = 591,227.47

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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.