Home / 686,529.39-947,466.45-380,701.62

Finding the Fourth Proportional to 686,529.39, 947,466.45 and 380,701.62

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Solution

The fourth proportional to 686,529.39, 947,466.45 and 380,701.62 is: 525,399.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,529.39 : 947,466.45 = 380,701.62 : x
  2. Step 2: Convert to fraction form
    686,529.39/947,466.45 = 380,701.62/x
  3. Step 3: Cross multiply
    686,529.39x = 947,466.45 × 380,701.62
  4. Step 4: Simplify right side
    686,529.39x = 360,702,012,410.65
  5. Step 5: Solve for x
    x = 360,702,012,410.65/686,529.39
  6. Step 6: Final answer
    x = 525,399.23

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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.