Home / 915,525.75-1,263,440.72-507,644.78

Finding the Fourth Proportional to 915,525.75, 1,263,440.72 and 507,644.78

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Solution

The fourth proportional to 915,525.75, 1,263,440.72 and 507,644.78 is: 700,558.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,525.75 : 1,263,440.72 = 507,644.78 : x
  2. Step 2: Convert to fraction form
    915,525.75/1,263,440.72 = 507,644.78/x
  3. Step 3: Cross multiply
    915,525.75x = 1,263,440.72 × 507,644.78
  4. Step 4: Simplify right side
    915,525.75x = 641,379,086,347.44
  5. Step 5: Solve for x
    x = 641,379,086,347.44/915,525.75
  6. Step 6: Final answer
    x = 700,558.22

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1.5x scale

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.