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Finding the Fourth Proportional to 434,517.12, 648,803.16 and 389,246.22

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Solution

The fourth proportional to 434,517.12, 648,803.16 and 389,246.22 is: 581,206.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,517.12 : 648,803.16 = 389,246.22 : x
  2. Step 2: Convert to fraction form
    434,517.12/648,803.16 = 389,246.22/x
  3. Step 3: Cross multiply
    434,517.12x = 648,803.16 × 389,246.22
  4. Step 4: Simplify right side
    434,517.12x = 252,544,177,554.06
  5. Step 5: Solve for x
    x = 252,544,177,554.06/434,517.12
  6. Step 6: Final answer
    x = 581,206.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.