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Finding the Fourth Proportional to 698,195.55, 963,503.26 and 388,090.00

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Solution

The fourth proportional to 698,195.55, 963,503.26 and 388,090.00 is: 535,560.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,195.55 : 963,503.26 = 388,090.00 : x
  2. Step 2: Convert to fraction form
    698,195.55/963,503.26 = 388,090.00/x
  3. Step 3: Cross multiply
    698,195.55x = 963,503.26 × 388,090.00
  4. Step 4: Simplify right side
    698,195.55x = 373,925,981,499.06
  5. Step 5: Solve for x
    x = 373,925,981,499.06/698,195.55
  6. Step 6: Final answer
    x = 535,560.54

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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.