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Finding the Fourth Proportional to 778,672.02, 1,168,009.11 and 217,705.98

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Solution

The fourth proportional to 778,672.02, 1,168,009.11 and 217,705.98 is: 326,559.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,672.02 : 1,168,009.11 = 217,705.98 : x
  2. Step 2: Convert to fraction form
    778,672.02/1,168,009.11 = 217,705.98/x
  3. Step 3: Cross multiply
    778,672.02x = 1,168,009.11 × 217,705.98
  4. Step 4: Simplify right side
    778,672.02x = 254,282,567,941.48
  5. Step 5: Solve for x
    x = 254,282,567,941.48/778,672.02
  6. Step 6: Final answer
    x = 326,559.27

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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.