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Finding the Fourth Proportional to 488,336.40, 731,520.45 and 328,904.10

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Solution

The fourth proportional to 488,336.40, 731,520.45 and 328,904.10 is: 492,693.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,336.40 : 731,520.45 = 328,904.10 : x
  2. Step 2: Convert to fraction form
    488,336.40/731,520.45 = 328,904.10/x
  3. Step 3: Cross multiply
    488,336.40x = 731,520.45 × 328,904.10
  4. Step 4: Simplify right side
    488,336.40x = 240,600,075,238.85
  5. Step 5: Solve for x
    x = 240,600,075,238.85/488,336.40
  6. Step 6: Final answer
    x = 492,693.31

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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.