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Finding the Fourth Proportional to 389,470.70, 546,046.30 and 389,470.70

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Solution

The fourth proportional to 389,470.70, 546,046.30 and 389,470.70 is: 546,046.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,470.70 : 546,046.30 = 389,470.70 : x
  2. Step 2: Convert to fraction form
    389,470.70/546,046.30 = 389,470.70/x
  3. Step 3: Cross multiply
    389,470.70x = 546,046.30 × 389,470.70
  4. Step 4: Simplify right side
    389,470.70x = 212,669,034,693.41
  5. Step 5: Solve for x
    x = 212,669,034,693.41/389,470.70
  6. Step 6: Final answer
    x = 546,046.30

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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.