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Finding the Fourth Proportional to 655,383.90, 919,403.70 and 655,383.90

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Solution

The fourth proportional to 655,383.90, 919,403.70 and 655,383.90 is: 919,403.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,383.90 : 919,403.70 = 655,383.90 : x
  2. Step 2: Convert to fraction form
    655,383.90/919,403.70 = 655,383.90/x
  3. Step 3: Cross multiply
    655,383.90x = 919,403.70 × 655,383.90
  4. Step 4: Simplify right side
    655,383.90x = 602,562,382,580.43
  5. Step 5: Solve for x
    x = 602,562,382,580.43/655,383.90
  6. Step 6: Final answer
    x = 919,403.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.