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Finding the Fourth Proportional to 913,640.08, 1,369,672.08 and 439,673.44

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Solution

The fourth proportional to 913,640.08, 1,369,672.08 and 439,673.44 is: 659,130.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    913,640.08 : 1,369,672.08 = 439,673.44 : x
  2. Step 2: Convert to fraction form
    913,640.08/1,369,672.08 = 439,673.44/x
  3. Step 3: Cross multiply
    913,640.08x = 1,369,672.08 × 439,673.44
  4. Step 4: Simplify right side
    913,640.08x = 602,208,435,085.56
  5. Step 5: Solve for x
    x = 602,208,435,085.56/913,640.08
  6. Step 6: Final answer
    x = 659,130.93

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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.