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Finding the Fourth Proportional to 495,910.80, 745,421.40 and 486,579.60

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Solution

The fourth proportional to 495,910.80, 745,421.40 and 486,579.60 is: 731,395.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,910.80 : 745,421.40 = 486,579.60 : x
  2. Step 2: Convert to fraction form
    495,910.80/745,421.40 = 486,579.60/x
  3. Step 3: Cross multiply
    495,910.80x = 745,421.40 × 486,579.60
  4. Step 4: Simplify right side
    495,910.80x = 362,706,846,643.44
  5. Step 5: Solve for x
    x = 362,706,846,643.44/495,910.80
  6. Step 6: Final answer
    x = 731,395.34

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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.