Home / 642,087.40-962,094.30-405,005.80

Finding the Fourth Proportional to 642,087.40, 962,094.30 and 405,005.80

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Solution

The fourth proportional to 642,087.40, 962,094.30 and 405,005.80 is: 606,854.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,087.40 : 962,094.30 = 405,005.80 : x
  2. Step 2: Convert to fraction form
    642,087.40/962,094.30 = 405,005.80/x
  3. Step 3: Cross multiply
    642,087.40x = 962,094.30 × 405,005.80
  4. Step 4: Simplify right side
    642,087.40x = 389,653,771,646.94
  5. Step 5: Solve for x
    x = 389,653,771,646.94/642,087.40
  6. Step 6: Final answer
    x = 606,854.72

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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.