Home / 864,840.30-1,296,824.94-288,259.39

Finding the Fourth Proportional to 864,840.30, 1,296,824.94 and 288,259.39

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Solution

The fourth proportional to 864,840.30, 1,296,824.94 and 288,259.39 is: 432,243.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,840.30 : 1,296,824.94 = 288,259.39 : x
  2. Step 2: Convert to fraction form
    864,840.30/1,296,824.94 = 288,259.39/x
  3. Step 3: Cross multiply
    864,840.30x = 1,296,824.94 × 288,259.39
  4. Step 4: Simplify right side
    864,840.30x = 373,821,958,215.77
  5. Step 5: Solve for x
    x = 373,821,958,215.77/864,840.30
  6. Step 6: Final answer
    x = 432,243.92

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1.5x scale

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.