Home / 686,532.93-947,438.49-380,591.07

Finding the Fourth Proportional to 686,532.93, 947,438.49 and 380,591.07

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Solution

The fourth proportional to 686,532.93, 947,438.49 and 380,591.07 is: 525,228.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,532.93 : 947,438.49 = 380,591.07 : x
  2. Step 2: Convert to fraction form
    686,532.93/947,438.49 = 380,591.07/x
  3. Step 3: Cross multiply
    686,532.93x = 947,438.49 × 380,591.07
  4. Step 4: Simplify right side
    686,532.93x = 360,586,628,668.28
  5. Step 5: Solve for x
    x = 360,586,628,668.28/686,532.93
  6. Step 6: Final answer
    x = 525,228.45

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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.