Home / 692,133.80-1,038,200.70-318,156.80

Finding the Fourth Proportional to 692,133.80, 1,038,200.70 and 318,156.80

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Solution

The fourth proportional to 692,133.80, 1,038,200.70 and 318,156.80 is: 477,235.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,133.80 : 1,038,200.70 = 318,156.80 : x
  2. Step 2: Convert to fraction form
    692,133.80/1,038,200.70 = 318,156.80/x
  3. Step 3: Cross multiply
    692,133.80x = 1,038,200.70 × 318,156.80
  4. Step 4: Simplify right side
    692,133.80x = 330,310,612,469.76
  5. Step 5: Solve for x
    x = 330,310,612,469.76/692,133.80
  6. Step 6: Final answer
    x = 477,235.20

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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.