Home / 686,107.49-946,814.22-380,181.20

Finding the Fourth Proportional to 686,107.49, 946,814.22 and 380,181.20

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Solution

The fourth proportional to 686,107.49, 946,814.22 and 380,181.20 is: 524,642.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,107.49 : 946,814.22 = 380,181.20 : x
  2. Step 2: Convert to fraction form
    686,107.49/946,814.22 = 380,181.20/x
  3. Step 3: Cross multiply
    686,107.49x = 946,814.22 × 380,181.20
  4. Step 4: Simplify right side
    686,107.49x = 359,960,961,602.59
  5. Step 5: Solve for x
    x = 359,960,961,602.59/686,107.49
  6. Step 6: Final answer
    x = 524,642.23

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Double scale
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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.