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Finding the Fourth Proportional to 389,455.70, 546,025.30 and 389,455.70

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Solution

The fourth proportional to 389,455.70, 546,025.30 and 389,455.70 is: 546,025.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,455.70 : 546,025.30 = 389,455.70 : x
  2. Step 2: Convert to fraction form
    389,455.70/546,025.30 = 389,455.70/x
  3. Step 3: Cross multiply
    389,455.70x = 546,025.30 × 389,455.70
  4. Step 4: Simplify right side
    389,455.70x = 212,652,665,429.21
  5. Step 5: Solve for x
    x = 212,652,665,429.21/389,455.70
  6. Step 6: Final answer
    x = 546,025.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.