Home / 818,467.80-1,227,701.70-257,429.40

Finding the Fourth Proportional to 818,467.80, 1,227,701.70 and 257,429.40

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Solution

The fourth proportional to 818,467.80, 1,227,701.70 and 257,429.40 is: 386,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,467.80 : 1,227,701.70 = 257,429.40 : x
  2. Step 2: Convert to fraction form
    818,467.80/1,227,701.70 = 257,429.40/x
  3. Step 3: Cross multiply
    818,467.80x = 1,227,701.70 × 257,429.40
  4. Step 4: Simplify right side
    818,467.80x = 316,046,512,009.98
  5. Step 5: Solve for x
    x = 316,046,512,009.98/818,467.80
  6. Step 6: Final answer
    x = 386,144.10

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Similar ratio
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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.