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Finding the Fourth Proportional to 459,448.40, 687,790.20 and 404,152.40

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Solution

The fourth proportional to 459,448.40, 687,790.20 and 404,152.40 is: 605,012.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    459,448.40 : 687,790.20 = 404,152.40 : x
  2. Step 2: Convert to fraction form
    459,448.40/687,790.20 = 404,152.40/x
  3. Step 3: Cross multiply
    459,448.40x = 687,790.20 × 404,152.40
  4. Step 4: Simplify right side
    459,448.40x = 277,972,060,026.48
  5. Step 5: Solve for x
    x = 277,972,060,026.48/459,448.40
  6. Step 6: Final answer
    x = 605,012.58

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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.