Home / 727,439.76-1,003,867.20-405,211.68

Finding the Fourth Proportional to 727,439.76, 1,003,867.20 and 405,211.68

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Solution

The fourth proportional to 727,439.76, 1,003,867.20 and 405,211.68 is: 559,192.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,439.76 : 1,003,867.20 = 405,211.68 : x
  2. Step 2: Convert to fraction form
    727,439.76/1,003,867.20 = 405,211.68/x
  3. Step 3: Cross multiply
    727,439.76x = 1,003,867.20 × 405,211.68
  4. Step 4: Simplify right side
    727,439.76x = 406,778,714,608.90
  5. Step 5: Solve for x
    x = 406,778,714,608.90/727,439.76
  6. Step 6: Final answer
    x = 559,192.30

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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.