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Finding the Fourth Proportional to 415,200.70, 621,693.88 and 415,200.70

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Solution

The fourth proportional to 415,200.70, 621,693.88 and 415,200.70 is: 621,693.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,200.70 : 621,693.88 = 415,200.70 : x
  2. Step 2: Convert to fraction form
    415,200.70/621,693.88 = 415,200.70/x
  3. Step 3: Cross multiply
    415,200.70x = 621,693.88 × 415,200.70
  4. Step 4: Simplify right side
    415,200.70x = 258,127,734,161.72
  5. Step 5: Solve for x
    x = 258,127,734,161.72/415,200.70
  6. Step 6: Final answer
    x = 621,693.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.