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Finding the Fourth Proportional to 601,991.19, 830,582.51 and 372,438.20

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Solution

The fourth proportional to 601,991.19, 830,582.51 and 372,438.20 is: 513,862.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    601,991.19 : 830,582.51 = 372,438.20 : x
  2. Step 2: Convert to fraction form
    601,991.19/830,582.51 = 372,438.20/x
  3. Step 3: Cross multiply
    601,991.19x = 830,582.51 × 372,438.20
  4. Step 4: Simplify right side
    601,991.19x = 309,340,655,190.15
  5. Step 5: Solve for x
    x = 309,340,655,190.15/601,991.19
  6. Step 6: Final answer
    x = 513,862.43

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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.