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Finding the Fourth Proportional to 607,999.70, 911,999.55 and 328,063.70

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Solution

The fourth proportional to 607,999.70, 911,999.55 and 328,063.70 is: 492,095.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    607,999.70 : 911,999.55 = 328,063.70 : x
  2. Step 2: Convert to fraction form
    607,999.70/911,999.55 = 328,063.70/x
  3. Step 3: Cross multiply
    607,999.70x = 911,999.55 × 328,063.70
  4. Step 4: Simplify right side
    607,999.70x = 299,193,946,771.34
  5. Step 5: Solve for x
    x = 299,193,946,771.34/607,999.70
  6. Step 6: Final answer
    x = 492,095.55

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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.