Home / 686,877.02-947,066.56-445,071.36

Finding the Fourth Proportional to 686,877.02, 947,066.56 and 445,071.36

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Solution

The fourth proportional to 686,877.02, 947,066.56 and 445,071.36 is: 613,664.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,877.02 : 947,066.56 = 445,071.36 : x
  2. Step 2: Convert to fraction form
    686,877.02/947,066.56 = 445,071.36/x
  3. Step 3: Cross multiply
    686,877.02x = 947,066.56 × 445,071.36
  4. Step 4: Simplify right side
    686,877.02x = 421,512,201,869.72
  5. Step 5: Solve for x
    x = 421,512,201,869.72/686,877.02
  6. Step 6: Final answer
    x = 613,664.73

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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.