Home / 864,784.80-1,296,205.20-415,720.80

Finding the Fourth Proportional to 864,784.80, 1,296,205.20 and 415,720.80

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Solution

The fourth proportional to 864,784.80, 1,296,205.20 and 415,720.80 is: 623,113.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    864,784.80 : 1,296,205.20 = 415,720.80 : x
  2. Step 2: Convert to fraction form
    864,784.80/1,296,205.20 = 415,720.80/x
  3. Step 3: Cross multiply
    864,784.80x = 1,296,205.20 × 415,720.80
  4. Step 4: Simplify right side
    864,784.80x = 538,859,462,708.16
  5. Step 5: Solve for x
    x = 538,859,462,708.16/864,784.80
  6. Step 6: Final answer
    x = 623,113.94

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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.