Home / 674,555.45-930,776.00-398,875.05

Finding the Fourth Proportional to 674,555.45, 930,776.00 and 398,875.05

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Solution

The fourth proportional to 674,555.45, 930,776.00 and 398,875.05 is: 550,382.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    674,555.45 : 930,776.00 = 398,875.05 : x
  2. Step 2: Convert to fraction form
    674,555.45/930,776.00 = 398,875.05/x
  3. Step 3: Cross multiply
    674,555.45x = 930,776.00 × 398,875.05
  4. Step 4: Simplify right side
    674,555.45x = 371,263,321,544.43
  5. Step 5: Solve for x
    x = 371,263,321,544.43/674,555.45
  6. Step 6: Final answer
    x = 550,382.22

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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.