Home / 945,443.64-1,304,720.55-515,725.68

Finding the Fourth Proportional to 945,443.64, 1,304,720.55 and 515,725.68

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Solution

The fourth proportional to 945,443.64, 1,304,720.55 and 515,725.68 is: 711,705.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,443.64 : 1,304,720.55 = 515,725.68 : x
  2. Step 2: Convert to fraction form
    945,443.64/1,304,720.55 = 515,725.68/x
  3. Step 3: Cross multiply
    945,443.64x = 1,304,720.55 × 515,725.68
  4. Step 4: Simplify right side
    945,443.64x = 672,877,892,858.72
  5. Step 5: Solve for x
    x = 672,877,892,858.72/945,443.64
  6. Step 6: Final answer
    x = 711,705.98

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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.