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Finding the Fourth Proportional to 673,344.82, 930,447.57 and 640,543.06

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Solution

The fourth proportional to 673,344.82, 930,447.57 and 640,543.06 is: 885,121.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    673,344.82 : 930,447.57 = 640,543.06 : x
  2. Step 2: Convert to fraction form
    673,344.82/930,447.57 = 640,543.06/x
  3. Step 3: Cross multiply
    673,344.82x = 930,447.57 × 640,543.06
  4. Step 4: Simplify right side
    673,344.82x = 595,991,733,657.36
  5. Step 5: Solve for x
    x = 595,991,733,657.36/673,344.82
  6. Step 6: Final answer
    x = 885,121.14

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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.