Home / 778,978.30-1,168,455.30-399,680.14

Finding the Fourth Proportional to 778,978.30, 1,168,455.30 and 399,680.14

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Solution

The fourth proportional to 778,978.30, 1,168,455.30 and 399,680.14 is: 599,513.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,978.30 : 1,168,455.30 = 399,680.14 : x
  2. Step 2: Convert to fraction form
    778,978.30/1,168,455.30 = 399,680.14/x
  3. Step 3: Cross multiply
    778,978.30x = 1,168,455.30 × 399,680.14
  4. Step 4: Simplify right side
    778,978.30x = 467,008,377,887.74
  5. Step 5: Solve for x
    x = 467,008,377,887.74/778,978.30
  6. Step 6: Final answer
    x = 599,513.98

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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.