Home / 739,452.75-1,020,444.80-399,921

Finding the Fourth Proportional to 739,452.75, 1,020,444.80 and 399,921

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Solution

The fourth proportional to 739,452.75, 1,020,444.80 and 399,921 is: 551,890.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,452.75 : 1,020,444.80 = 399,921 : x
  2. Step 2: Convert to fraction form
    739,452.75/1,020,444.80 = 399,921/x
  3. Step 3: Cross multiply
    739,452.75x = 1,020,444.80 × 399,921
  4. Step 4: Simplify right side
    739,452.75x = 408,097,302,861.20
  5. Step 5: Solve for x
    x = 408,097,302,861.20/739,452.75
  6. Step 6: Final answer
    x = 551,890.98

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Similar ratio
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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.