Home / 663,790.60-916,085.46-377,400.52

Finding the Fourth Proportional to 663,790.60, 916,085.46 and 377,400.52

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Solution

The fourth proportional to 663,790.60, 916,085.46 and 377,400.52 is: 520,843.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,790.60 : 916,085.46 = 377,400.52 : x
  2. Step 2: Convert to fraction form
    663,790.60/916,085.46 = 377,400.52/x
  3. Step 3: Cross multiply
    663,790.60x = 916,085.46 × 377,400.52
  4. Step 4: Simplify right side
    663,790.60x = 345,731,128,968.44
  5. Step 5: Solve for x
    x = 345,731,128,968.44/663,790.60
  6. Step 6: Final answer
    x = 520,843.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.