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Finding the Fourth Proportional to 432,085.60, 648,128.40 and 273,800.80

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Solution

The fourth proportional to 432,085.60, 648,128.40 and 273,800.80 is: 410,701.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,085.60 : 648,128.40 = 273,800.80 : x
  2. Step 2: Convert to fraction form
    432,085.60/648,128.40 = 273,800.80/x
  3. Step 3: Cross multiply
    432,085.60x = 648,128.40 × 273,800.80
  4. Step 4: Simplify right side
    432,085.60x = 177,458,074,422.72
  5. Step 5: Solve for x
    x = 177,458,074,422.72/432,085.60
  6. Step 6: Final answer
    x = 410,701.20

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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.