Home / 651,328.40-977,867.40-415,715.60

Finding the Fourth Proportional to 651,328.40, 977,867.40 and 415,715.60

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Solution

The fourth proportional to 651,328.40, 977,867.40 and 415,715.60 is: 624,131.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,328.40 : 977,867.40 = 415,715.60 : x
  2. Step 2: Convert to fraction form
    651,328.40/977,867.40 = 415,715.60/x
  3. Step 3: Cross multiply
    651,328.40x = 977,867.40 × 415,715.60
  4. Step 4: Simplify right side
    651,328.40x = 406,514,732,911.44
  5. Step 5: Solve for x
    x = 406,514,732,911.44/651,328.40
  6. Step 6: Final answer
    x = 624,131.75

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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.