Home / 945,381.38-1,304,644.05-515,676.85

Finding the Fourth Proportional to 945,381.38, 1,304,644.05 and 515,676.85

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Solution

The fourth proportional to 945,381.38, 1,304,644.05 and 515,676.85 is: 711,643.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,381.38 : 1,304,644.05 = 515,676.85 : x
  2. Step 2: Convert to fraction form
    945,381.38/1,304,644.05 = 515,676.85/x
  3. Step 3: Cross multiply
    945,381.38x = 1,304,644.05 × 515,676.85
  4. Step 4: Simplify right side
    945,381.38x = 672,774,730,813.63
  5. Step 5: Solve for x
    x = 672,774,730,813.63/945,381.38
  6. Step 6: Final answer
    x = 711,643.73

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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.