Home / 725,178.72-1,000,747.80-402,889.18

Finding the Fourth Proportional to 725,178.72, 1,000,747.80 and 402,889.18

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Solution

The fourth proportional to 725,178.72, 1,000,747.80 and 402,889.18 is: 555,987.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,178.72 : 1,000,747.80 = 402,889.18 : x
  2. Step 2: Convert to fraction form
    725,178.72/1,000,747.80 = 402,889.18/x
  3. Step 3: Cross multiply
    725,178.72x = 1,000,747.80 × 402,889.18
  4. Step 4: Simplify right side
    725,178.72x = 403,190,460,528.80
  5. Step 5: Solve for x
    x = 403,190,460,528.80/725,178.72
  6. Step 6: Final answer
    x = 555,987.72

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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.