Home / 811,444.60-1,216,907.70-338,015.80

Finding the Fourth Proportional to 811,444.60, 1,216,907.70 and 338,015.80

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Solution

The fourth proportional to 811,444.60, 1,216,907.70 and 338,015.80 is: 506,915.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,444.60 : 1,216,907.70 = 338,015.80 : x
  2. Step 2: Convert to fraction form
    811,444.60/1,216,907.70 = 338,015.80/x
  3. Step 3: Cross multiply
    811,444.60x = 1,216,907.70 × 338,015.80
  4. Step 4: Simplify right side
    811,444.60x = 411,334,029,741.66
  5. Step 5: Solve for x
    x = 411,334,029,741.66/811,444.60
  6. Step 6: Final answer
    x = 506,915.73

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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.