Home / 651,027.20-976,540.80-429,411.20

Finding the Fourth Proportional to 651,027.20, 976,540.80 and 429,411.20

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Solution

The fourth proportional to 651,027.20, 976,540.80 and 429,411.20 is: 644,116.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,027.20 : 976,540.80 = 429,411.20 : x
  2. Step 2: Convert to fraction form
    651,027.20/976,540.80 = 429,411.20/x
  3. Step 3: Cross multiply
    651,027.20x = 976,540.80 × 429,411.20
  4. Step 4: Simplify right side
    651,027.20x = 419,337,556,776.96
  5. Step 5: Solve for x
    x = 419,337,556,776.96/651,027.20
  6. Step 6: Final answer
    x = 644,116.80

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Double scale
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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.