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Finding the Fourth Proportional to 553,354.85, 830,778.56 and 354,064.25

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Solution

The fourth proportional to 553,354.85, 830,778.56 and 354,064.25 is: 531,573.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,354.85 : 830,778.56 = 354,064.25 : x
  2. Step 2: Convert to fraction form
    553,354.85/830,778.56 = 354,064.25/x
  3. Step 3: Cross multiply
    553,354.85x = 830,778.56 × 354,064.25
  4. Step 4: Simplify right side
    553,354.85x = 294,148,987,762.48
  5. Step 5: Solve for x
    x = 294,148,987,762.48/553,354.85
  6. Step 6: Final answer
    x = 531,573.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.