Home / 651,321.40-977,856.90-415,708.60

Finding the Fourth Proportional to 651,321.40, 977,856.90 and 415,708.60

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Solution

The fourth proportional to 651,321.40, 977,856.90 and 415,708.60 is: 624,121.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,321.40 : 977,856.90 = 415,708.60 : x
  2. Step 2: Convert to fraction form
    651,321.40/977,856.90 = 415,708.60/x
  3. Step 3: Cross multiply
    651,321.40x = 977,856.90 × 415,708.60
  4. Step 4: Simplify right side
    651,321.40x = 406,503,522,899.34
  5. Step 5: Solve for x
    x = 406,503,522,899.34/651,321.40
  6. Step 6: Final answer
    x = 624,121.24

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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.