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Finding the Fourth Proportional to 620,620.80, 854,561.28 and 467,880.96

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Solution

The fourth proportional to 620,620.80, 854,561.28 and 467,880.96 is: 644,246.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,620.80 : 854,561.28 = 467,880.96 : x
  2. Step 2: Convert to fraction form
    620,620.80/854,561.28 = 467,880.96/x
  3. Step 3: Cross multiply
    620,620.80x = 854,561.28 × 467,880.96
  4. Step 4: Simplify right side
    620,620.80x = 399,832,952,065.23
  5. Step 5: Solve for x
    x = 399,832,952,065.23/620,620.80
  6. Step 6: Final answer
    x = 644,246.78

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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.