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Finding the Fourth Proportional to 919,483.74, 1,379,211.75 and 413,687.52

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Solution

The fourth proportional to 919,483.74, 1,379,211.75 and 413,687.52 is: 620,525.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,483.74 : 1,379,211.75 = 413,687.52 : x
  2. Step 2: Convert to fraction form
    919,483.74/1,379,211.75 = 413,687.52/x
  3. Step 3: Cross multiply
    919,483.74x = 1,379,211.75 × 413,687.52
  4. Step 4: Simplify right side
    919,483.74x = 570,562,688,412.36
  5. Step 5: Solve for x
    x = 570,562,688,412.36/919,483.74
  6. Step 6: Final answer
    x = 620,525.04

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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.