Home / 455,917.60-683,876.40-140,471.20

Finding the Fourth Proportional to 455,917.60, 683,876.40 and 140,471.20

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Solution

The fourth proportional to 455,917.60, 683,876.40 and 140,471.20 is: 210,706.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,917.60 : 683,876.40 = 140,471.20 : x
  2. Step 2: Convert to fraction form
    455,917.60/683,876.40 = 140,471.20/x
  3. Step 3: Cross multiply
    455,917.60x = 683,876.40 × 140,471.20
  4. Step 4: Simplify right side
    455,917.60x = 96,064,938,559.68
  5. Step 5: Solve for x
    x = 96,064,938,559.68/455,917.60
  6. Step 6: Final answer
    x = 210,706.80

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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.