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Finding the Fourth Proportional to 488,702.90, 733,054.35 and 445,400.30

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Solution

The fourth proportional to 488,702.90, 733,054.35 and 445,400.30 is: 668,100.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,702.90 : 733,054.35 = 445,400.30 : x
  2. Step 2: Convert to fraction form
    488,702.90/733,054.35 = 445,400.30/x
  3. Step 3: Cross multiply
    488,702.90x = 733,054.35 × 445,400.30
  4. Step 4: Simplify right side
    488,702.90x = 326,502,627,406.31
  5. Step 5: Solve for x
    x = 326,502,627,406.31/488,702.90
  6. Step 6: Final answer
    x = 668,100.45

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Similar ratio
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1.5x scale

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.