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Finding the Fourth Proportional to 621,063.51, 857,011.10 and 359,373.59

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Solution

The fourth proportional to 621,063.51, 857,011.10 and 359,373.59 is: 495,902.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,063.51 : 857,011.10 = 359,373.59 : x
  2. Step 2: Convert to fraction form
    621,063.51/857,011.10 = 359,373.59/x
  3. Step 3: Cross multiply
    621,063.51x = 857,011.10 × 359,373.59
  4. Step 4: Simplify right side
    621,063.51x = 307,987,155,676.85
  5. Step 5: Solve for x
    x = 307,987,155,676.85/621,063.51
  6. Step 6: Final answer
    x = 495,902.84

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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.