Home / 837,138.50-1,155,242.98-455,165.28

Finding the Fourth Proportional to 837,138.50, 1,155,242.98 and 455,165.28

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Solution

The fourth proportional to 837,138.50, 1,155,242.98 and 455,165.28 is: 628,123.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    837,138.50 : 1,155,242.98 = 455,165.28 : x
  2. Step 2: Convert to fraction form
    837,138.50/1,155,242.98 = 455,165.28/x
  3. Step 3: Cross multiply
    837,138.50x = 1,155,242.98 × 455,165.28
  4. Step 4: Simplify right side
    837,138.50x = 525,826,494,459.73
  5. Step 5: Solve for x
    x = 525,826,494,459.73/837,138.50
  6. Step 6: Final answer
    x = 628,123.66

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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.