Home / 686,832.16-947,836.20-380,914.60

Finding the Fourth Proportional to 686,832.16, 947,836.20 and 380,914.60

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Solution

The fourth proportional to 686,832.16, 947,836.20 and 380,914.60 is: 525,666.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,832.16 : 947,836.20 = 380,914.60 : x
  2. Step 2: Convert to fraction form
    686,832.16/947,836.20 = 380,914.60/x
  3. Step 3: Cross multiply
    686,832.16x = 947,836.20 × 380,914.60
  4. Step 4: Simplify right side
    686,832.16x = 361,044,646,988.52
  5. Step 5: Solve for x
    x = 361,044,646,988.52/686,832.16
  6. Step 6: Final answer
    x = 525,666.48

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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.