Home / 725,747.40-1,001,655.15-420,009.93

Finding the Fourth Proportional to 725,747.40, 1,001,655.15 and 420,009.93

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Solution

The fourth proportional to 725,747.40, 1,001,655.15 and 420,009.93 is: 579,685.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,747.40 : 1,001,655.15 = 420,009.93 : x
  2. Step 2: Convert to fraction form
    725,747.40/1,001,655.15 = 420,009.93/x
  3. Step 3: Cross multiply
    725,747.40x = 1,001,655.15 × 420,009.93
  4. Step 4: Simplify right side
    725,747.40x = 420,705,109,435.64
  5. Step 5: Solve for x
    x = 420,705,109,435.64/725,747.40
  6. Step 6: Final answer
    x = 579,685.31

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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.