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Finding the Fourth Proportional to 443,999.70, 665,999.55 and 395,010.90

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Solution

The fourth proportional to 443,999.70, 665,999.55 and 395,010.90 is: 592,516.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,999.70 : 665,999.55 = 395,010.90 : x
  2. Step 2: Convert to fraction form
    443,999.70/665,999.55 = 395,010.90/x
  3. Step 3: Cross multiply
    443,999.70x = 665,999.55 × 395,010.90
  4. Step 4: Simplify right side
    443,999.70x = 263,077,081,645.10
  5. Step 5: Solve for x
    x = 263,077,081,645.10/443,999.70
  6. Step 6: Final answer
    x = 592,516.35

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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.