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Finding the Fourth Proportional to 557,017.03, 768,809.91 and 353,349.01

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Solution

The fourth proportional to 557,017.03, 768,809.91 and 353,349.01 is: 487,701.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,017.03 : 768,809.91 = 353,349.01 : x
  2. Step 2: Convert to fraction form
    557,017.03/768,809.91 = 353,349.01/x
  3. Step 3: Cross multiply
    557,017.03x = 768,809.91 × 353,349.01
  4. Step 4: Simplify right side
    557,017.03x = 271,658,220,576.69
  5. Step 5: Solve for x
    x = 271,658,220,576.69/557,017.03
  6. Step 6: Final answer
    x = 487,701.82

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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.