Home / 910,400.70-1,366,378.65-405,738.30

Finding the Fourth Proportional to 910,400.70, 1,366,378.65 and 405,738.30

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Solution

The fourth proportional to 910,400.70, 1,366,378.65 and 405,738.30 is: 608,954.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    910,400.70 : 1,366,378.65 = 405,738.30 : x
  2. Step 2: Convert to fraction form
    910,400.70/1,366,378.65 = 405,738.30/x
  3. Step 3: Cross multiply
    910,400.70x = 1,366,378.65 × 405,738.30
  4. Step 4: Simplify right side
    910,400.70x = 554,392,150,607.30
  5. Step 5: Solve for x
    x = 554,392,150,607.30/910,400.70
  6. Step 6: Final answer
    x = 608,954.00

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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.