Home / 725,643.48-1,001,399.96-398,970.27

Finding the Fourth Proportional to 725,643.48, 1,001,399.96 and 398,970.27

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Solution

The fourth proportional to 725,643.48, 1,001,399.96 and 398,970.27 is: 550,585.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,643.48 : 1,001,399.96 = 398,970.27 : x
  2. Step 2: Convert to fraction form
    725,643.48/1,001,399.96 = 398,970.27/x
  3. Step 3: Cross multiply
    725,643.48x = 1,001,399.96 × 398,970.27
  4. Step 4: Simplify right side
    725,643.48x = 399,528,810,424.34
  5. Step 5: Solve for x
    x = 399,528,810,424.34/725,643.48
  6. Step 6: Final answer
    x = 550,585.55

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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.