Home / 651,146.40-976,719.60-415,533.60

Finding the Fourth Proportional to 651,146.40, 976,719.60 and 415,533.60

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Solution

The fourth proportional to 651,146.40, 976,719.60 and 415,533.60 is: 623,300.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,146.40 : 976,719.60 = 415,533.60 : x
  2. Step 2: Convert to fraction form
    651,146.40/976,719.60 = 415,533.60/x
  3. Step 3: Cross multiply
    651,146.40x = 976,719.60 × 415,533.60
  4. Step 4: Simplify right side
    651,146.40x = 405,859,811,578.56
  5. Step 5: Solve for x
    x = 405,859,811,578.56/651,146.40
  6. Step 6: Final answer
    x = 623,300.40

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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.