Home / 778,840.80-1,167,386.40-329,485.20

Finding the Fourth Proportional to 778,840.80, 1,167,386.40 and 329,485.20

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Solution

The fourth proportional to 778,840.80, 1,167,386.40 and 329,485.20 is: 493,857.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,840.80 : 1,167,386.40 = 329,485.20 : x
  2. Step 2: Convert to fraction form
    778,840.80/1,167,386.40 = 329,485.20/x
  3. Step 3: Cross multiply
    778,840.80x = 1,167,386.40 × 329,485.20
  4. Step 4: Simplify right side
    778,840.80x = 384,636,541,481.28
  5. Step 5: Solve for x
    x = 384,636,541,481.28/778,840.80
  6. Step 6: Final answer
    x = 493,857.72

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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.