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Finding the Fourth Proportional to 413,437.90, 620,120.40 and 113,891.80

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Solution

The fourth proportional to 413,437.90, 620,120.40 and 113,891.80 is: 170,827.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,437.90 : 620,120.40 = 113,891.80 : x
  2. Step 2: Convert to fraction form
    413,437.90/620,120.40 = 113,891.80/x
  3. Step 3: Cross multiply
    413,437.90x = 620,120.40 × 113,891.80
  4. Step 4: Simplify right side
    413,437.90x = 70,626,628,572.72
  5. Step 5: Solve for x
    x = 70,626,628,572.72/413,437.90
  6. Step 6: Final answer
    x = 170,827.66

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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.