Home / 686,807.48-947,824.94-380,863.36

Finding the Fourth Proportional to 686,807.48, 947,824.94 and 380,863.36

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Solution

The fourth proportional to 686,807.48, 947,824.94 and 380,863.36 is: 525,608.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,807.48 : 947,824.94 = 380,863.36 : x
  2. Step 2: Convert to fraction form
    686,807.48/947,824.94 = 380,863.36/x
  3. Step 3: Cross multiply
    686,807.48x = 947,824.94 × 380,863.36
  4. Step 4: Simplify right side
    686,807.48x = 360,991,791,340.20
  5. Step 5: Solve for x
    x = 360,991,791,340.20/686,807.48
  6. Step 6: Final answer
    x = 525,608.42

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1.5x scale

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.