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Finding the Fourth Proportional to 479,907.18, 662,213.07 and 305,417.22

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Solution

The fourth proportional to 479,907.18, 662,213.07 and 305,417.22 is: 421,438.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,907.18 : 662,213.07 = 305,417.22 : x
  2. Step 2: Convert to fraction form
    479,907.18/662,213.07 = 305,417.22/x
  3. Step 3: Cross multiply
    479,907.18x = 662,213.07 × 305,417.22
  4. Step 4: Simplify right side
    479,907.18x = 202,251,274,887.07
  5. Step 5: Solve for x
    x = 202,251,274,887.07/479,907.18
  6. Step 6: Final answer
    x = 421,438.32

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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.