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Finding the Fourth Proportional to 450,362.88, 620,786.16 and 354,718.08

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Solution

The fourth proportional to 450,362.88, 620,786.16 and 354,718.08 is: 488,948.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    450,362.88 : 620,786.16 = 354,718.08 : x
  2. Step 2: Convert to fraction form
    450,362.88/620,786.16 = 354,718.08/x
  3. Step 3: Cross multiply
    450,362.88x = 620,786.16 × 354,718.08
  4. Step 4: Simplify right side
    450,362.88x = 220,204,074,765.77
  5. Step 5: Solve for x
    x = 220,204,074,765.77/450,362.88
  6. Step 6: Final answer
    x = 488,948.10

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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.