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Finding the Fourth Proportional to 544,400.80, 815,726.40 and 402,683.20

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Solution

The fourth proportional to 544,400.80, 815,726.40 and 402,683.20 is: 603,377.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    544,400.80 : 815,726.40 = 402,683.20 : x
  2. Step 2: Convert to fraction form
    544,400.80/815,726.40 = 402,683.20/x
  3. Step 3: Cross multiply
    544,400.80x = 815,726.40 × 402,683.20
  4. Step 4: Simplify right side
    544,400.80x = 328,479,317,076.48
  5. Step 5: Solve for x
    x = 328,479,317,076.48/544,400.80
  6. Step 6: Final answer
    x = 603,377.73

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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.