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Finding the Fourth Proportional to 551,077.07, 760,485.96 and 309,360.11

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Solution

The fourth proportional to 551,077.07, 760,485.96 and 309,360.11 is: 426,916.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,077.07 : 760,485.96 = 309,360.11 : x
  2. Step 2: Convert to fraction form
    551,077.07/760,485.96 = 309,360.11/x
  3. Step 3: Cross multiply
    551,077.07x = 760,485.96 × 309,360.11
  4. Step 4: Simplify right side
    551,077.07x = 235,264,016,436.63
  5. Step 5: Solve for x
    x = 235,264,016,436.63/551,077.07
  6. Step 6: Final answer
    x = 426,916.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.