Home / 727,484.72-1,003,929.18-421,738.33

Finding the Fourth Proportional to 727,484.72, 1,003,929.18 and 421,738.33

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Solution

The fourth proportional to 727,484.72, 1,003,929.18 and 421,738.33 is: 581,999.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,484.72 : 1,003,929.18 = 421,738.33 : x
  2. Step 2: Convert to fraction form
    727,484.72/1,003,929.18 = 421,738.33/x
  3. Step 3: Cross multiply
    727,484.72x = 1,003,929.18 × 421,738.33
  4. Step 4: Simplify right side
    727,484.72x = 423,395,415,811.47
  5. Step 5: Solve for x
    x = 423,395,415,811.47/727,484.72
  6. Step 6: Final answer
    x = 581,999.05

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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.