Home / 578,445.60-867,085.20-263,128.80

Finding the Fourth Proportional to 578,445.60, 867,085.20 and 263,128.80

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Solution

The fourth proportional to 578,445.60, 867,085.20 and 263,128.80 is: 394,427.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,445.60 : 867,085.20 = 263,128.80 : x
  2. Step 2: Convert to fraction form
    578,445.60/867,085.20 = 263,128.80/x
  3. Step 3: Cross multiply
    578,445.60x = 867,085.20 × 263,128.80
  4. Step 4: Simplify right side
    578,445.60x = 228,155,088,173.76
  5. Step 5: Solve for x
    x = 228,155,088,173.76/578,445.60
  6. Step 6: Final answer
    x = 394,427.91

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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.