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Finding the Fourth Proportional to 620,859.29, 857,019.89 and 362,820.02

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Solution

The fourth proportional to 620,859.29, 857,019.89 and 362,820.02 is: 500,828.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,859.29 : 857,019.89 = 362,820.02 : x
  2. Step 2: Convert to fraction form
    620,859.29/857,019.89 = 362,820.02/x
  3. Step 3: Cross multiply
    620,859.29x = 857,019.89 × 362,820.02
  4. Step 4: Simplify right side
    620,859.29x = 310,943,971,816.10
  5. Step 5: Solve for x
    x = 310,943,971,816.10/620,859.29
  6. Step 6: Final answer
    x = 500,828.41

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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.