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Finding the Fourth Proportional to 778,978.20, 1,168,467.30 and 778,978.20

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Solution

The fourth proportional to 778,978.20, 1,168,467.30 and 778,978.20 is: 1,168,467.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,978.20 : 1,168,467.30 = 778,978.20 : x
  2. Step 2: Convert to fraction form
    778,978.20/1,168,467.30 = 778,978.20/x
  3. Step 3: Cross multiply
    778,978.20x = 1,168,467.30 × 778,978.20
  4. Step 4: Simplify right side
    778,978.20x = 910,210,554,112.86
  5. Step 5: Solve for x
    x = 910,210,554,112.86/778,978.20
  6. Step 6: Final answer
    x = 1,168,467.30

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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.