Home / 879,136.40-1,318,704.60-429,926.60

Finding the Fourth Proportional to 879,136.40, 1,318,704.60 and 429,926.60

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Solution

The fourth proportional to 879,136.40, 1,318,704.60 and 429,926.60 is: 644,889.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,136.40 : 1,318,704.60 = 429,926.60 : x
  2. Step 2: Convert to fraction form
    879,136.40/1,318,704.60 = 429,926.60/x
  3. Step 3: Cross multiply
    879,136.40x = 1,318,704.60 × 429,926.60
  4. Step 4: Simplify right side
    879,136.40x = 566,946,185,082.36
  5. Step 5: Solve for x
    x = 566,946,185,082.36/879,136.40
  6. Step 6: Final answer
    x = 644,889.90

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Similar ratio
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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.