Home / 788,018.58-1,087,518.57-439,213.26

Finding the Fourth Proportional to 788,018.58, 1,087,518.57 and 439,213.26

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Solution

The fourth proportional to 788,018.58, 1,087,518.57 and 439,213.26 is: 606,143.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,018.58 : 1,087,518.57 = 439,213.26 : x
  2. Step 2: Convert to fraction form
    788,018.58/1,087,518.57 = 439,213.26/x
  3. Step 3: Cross multiply
    788,018.58x = 1,087,518.57 × 439,213.26
  4. Step 4: Simplify right side
    788,018.58x = 477,652,576,440.24
  5. Step 5: Solve for x
    x = 477,652,576,440.24/788,018.58
  6. Step 6: Final answer
    x = 606,143.80

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Double scale
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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.