Home / 818,405.30-1,129,354.45-450,810.39

Finding the Fourth Proportional to 818,405.30, 1,129,354.45 and 450,810.39

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Solution

The fourth proportional to 818,405.30, 1,129,354.45 and 450,810.39 is: 622,093.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,405.30 : 1,129,354.45 = 450,810.39 : x
  2. Step 2: Convert to fraction form
    818,405.30/1,129,354.45 = 450,810.39/x
  3. Step 3: Cross multiply
    818,405.30x = 1,129,354.45 × 450,810.39
  4. Step 4: Simplify right side
    818,405.30x = 509,124,723,160.79
  5. Step 5: Solve for x
    x = 509,124,723,160.79/818,405.30
  6. Step 6: Final answer
    x = 622,093.63

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Double scale
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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.