Home / 644,583.40-965,838.30-407,501.80

Finding the Fourth Proportional to 644,583.40, 965,838.30 and 407,501.80

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Solution

The fourth proportional to 644,583.40, 965,838.30 and 407,501.80 is: 610,597.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,583.40 : 965,838.30 = 407,501.80 : x
  2. Step 2: Convert to fraction form
    644,583.40/965,838.30 = 407,501.80/x
  3. Step 3: Cross multiply
    644,583.40x = 965,838.30 × 407,501.80
  4. Step 4: Simplify right side
    644,583.40x = 393,580,845,758.94
  5. Step 5: Solve for x
    x = 393,580,845,758.94/644,583.40
  6. Step 6: Final answer
    x = 610,597.24

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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.