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Finding the Fourth Proportional to 945,358.54, 1,304,598.84 and 515,647.90

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Solution

The fourth proportional to 945,358.54, 1,304,598.84 and 515,647.90 is: 711,596.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,358.54 : 1,304,598.84 = 515,647.90 : x
  2. Step 2: Convert to fraction form
    945,358.54/1,304,598.84 = 515,647.90/x
  3. Step 3: Cross multiply
    945,358.54x = 1,304,598.84 × 515,647.90
  4. Step 4: Simplify right side
    945,358.54x = 672,713,652,188.44
  5. Step 5: Solve for x
    x = 672,713,652,188.44/945,358.54
  6. Step 6: Final answer
    x = 711,596.31

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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.