Home / 686,488.49-947,158.31-396,077.03

Finding the Fourth Proportional to 686,488.49, 947,158.31 and 396,077.03

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Solution

The fourth proportional to 686,488.49, 947,158.31 and 396,077.03 is: 546,473.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,488.49 : 947,158.31 = 396,077.03 : x
  2. Step 2: Convert to fraction form
    686,488.49/947,158.31 = 396,077.03/x
  3. Step 3: Cross multiply
    686,488.49x = 947,158.31 × 396,077.03
  4. Step 4: Simplify right side
    686,488.49x = 375,147,648,384.23
  5. Step 5: Solve for x
    x = 375,147,648,384.23/686,488.49
  6. Step 6: Final answer
    x = 546,473.33

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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.