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Finding the Fourth Proportional to 450,004.20, 674,228.70 and 380,020.20

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Solution

The fourth proportional to 450,004.20, 674,228.70 and 380,020.20 is: 569,373.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,004.20 : 674,228.70 = 380,020.20 : x
  2. Step 2: Convert to fraction form
    450,004.20/674,228.70 = 380,020.20/x
  3. Step 3: Cross multiply
    450,004.20x = 674,228.70 × 380,020.20
  4. Step 4: Simplify right side
    450,004.20x = 256,220,525,419.74
  5. Step 5: Solve for x
    x = 256,220,525,419.74/450,004.20
  6. Step 6: Final answer
    x = 569,373.63

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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.