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Finding the Fourth Proportional to 611,453.40, 843,211.80 and 475,247.04

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Solution

The fourth proportional to 611,453.40, 843,211.80 and 475,247.04 is: 655,379.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,453.40 : 843,211.80 = 475,247.04 : x
  2. Step 2: Convert to fraction form
    611,453.40/843,211.80 = 475,247.04/x
  3. Step 3: Cross multiply
    611,453.40x = 843,211.80 × 475,247.04
  4. Step 4: Simplify right side
    611,453.40x = 400,733,912,043.07
  5. Step 5: Solve for x
    x = 400,733,912,043.07/611,453.40
  6. Step 6: Final answer
    x = 655,379.32

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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.