Home / 825,619.53-1,238,607.05-256,988.55

Finding the Fourth Proportional to 825,619.53, 1,238,607.05 and 256,988.55

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Solution

The fourth proportional to 825,619.53, 1,238,607.05 and 256,988.55 is: 385,538.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    825,619.53 : 1,238,607.05 = 256,988.55 : x
  2. Step 2: Convert to fraction form
    825,619.53/1,238,607.05 = 256,988.55/x
  3. Step 3: Cross multiply
    825,619.53x = 1,238,607.05 × 256,988.55
  4. Step 4: Simplify right side
    825,619.53x = 318,307,828,514.34
  5. Step 5: Solve for x
    x = 318,307,828,514.34/825,619.53
  6. Step 6: Final answer
    x = 385,538.15

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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.