Home / 692,068.80-1,038,103.20-318,820.80

Finding the Fourth Proportional to 692,068.80, 1,038,103.20 and 318,820.80

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Solution

The fourth proportional to 692,068.80, 1,038,103.20 and 318,820.80 is: 478,231.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,068.80 : 1,038,103.20 = 318,820.80 : x
  2. Step 2: Convert to fraction form
    692,068.80/1,038,103.20 = 318,820.80/x
  3. Step 3: Cross multiply
    692,068.80x = 1,038,103.20 × 318,820.80
  4. Step 4: Simplify right side
    692,068.80x = 330,968,892,706.56
  5. Step 5: Solve for x
    x = 330,968,892,706.56/692,068.80
  6. Step 6: Final answer
    x = 478,231.20

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1.5x scale

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.