Home / 939,865.57-1,296,979.59-510,136.45

Finding the Fourth Proportional to 939,865.57, 1,296,979.59 and 510,136.45

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Solution

The fourth proportional to 939,865.57, 1,296,979.59 and 510,136.45 is: 703,969.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    939,865.57 : 1,296,979.59 = 510,136.45 : x
  2. Step 2: Convert to fraction form
    939,865.57/1,296,979.59 = 510,136.45/x
  3. Step 3: Cross multiply
    939,865.57x = 1,296,979.59 × 510,136.45
  4. Step 4: Simplify right side
    939,865.57x = 661,636,563,765.06
  5. Step 5: Solve for x
    x = 661,636,563,765.06/939,865.57
  6. Step 6: Final answer
    x = 703,969.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.