Home / 864,991.61-1,297,263.09-257,638.02

Finding the Fourth Proportional to 864,991.61, 1,297,263.09 and 257,638.02

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Solution

The fourth proportional to 864,991.61, 1,297,263.09 and 257,638.02 is: 386,390.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,991.61 : 1,297,263.09 = 257,638.02 : x
  2. Step 2: Convert to fraction form
    864,991.61/1,297,263.09 = 257,638.02/x
  3. Step 3: Cross multiply
    864,991.61x = 1,297,263.09 × 257,638.02
  4. Step 4: Simplify right side
    864,991.61x = 334,224,290,028.09
  5. Step 5: Solve for x
    x = 334,224,290,028.09/864,991.61
  6. Step 6: Final answer
    x = 386,390.21

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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.