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Finding the Fourth Proportional to 591,300.62, 815,994.60 and 319,368.41

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Solution

The fourth proportional to 591,300.62, 815,994.60 and 319,368.41 is: 440,728.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,300.62 : 815,994.60 = 319,368.41 : x
  2. Step 2: Convert to fraction form
    591,300.62/815,994.60 = 319,368.41/x
  3. Step 3: Cross multiply
    591,300.62x = 815,994.60 × 319,368.41
  4. Step 4: Simplify right side
    591,300.62x = 260,602,897,970.59
  5. Step 5: Solve for x
    x = 260,602,897,970.59/591,300.62
  6. Step 6: Final answer
    x = 440,728.27

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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.