Home / 651,113.40-976,670.10-415,500.60

Finding the Fourth Proportional to 651,113.40, 976,670.10 and 415,500.60

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Solution

The fourth proportional to 651,113.40, 976,670.10 and 415,500.60 is: 623,250.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,113.40 : 976,670.10 = 415,500.60 : x
  2. Step 2: Convert to fraction form
    651,113.40/976,670.10 = 415,500.60/x
  3. Step 3: Cross multiply
    651,113.40x = 976,670.10 × 415,500.60
  4. Step 4: Simplify right side
    651,113.40x = 405,807,012,552.06
  5. Step 5: Solve for x
    x = 405,807,012,552.06/651,113.40
  6. Step 6: Final answer
    x = 623,250.90

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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.