Home / 402,623.40-603,206.10-318,934.20

Finding the Fourth Proportional to 402,623.40, 603,206.10 and 318,934.20

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Solution

The fourth proportional to 402,623.40, 603,206.10 and 318,934.20 is: 477,823.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,623.40 : 603,206.10 = 318,934.20 : x
  2. Step 2: Convert to fraction form
    402,623.40/603,206.10 = 318,934.20/x
  3. Step 3: Cross multiply
    402,623.40x = 603,206.10 × 318,934.20
  4. Step 4: Simplify right side
    402,623.40x = 192,383,054,938.62
  5. Step 5: Solve for x
    x = 192,383,054,938.62/402,623.40
  6. Step 6: Final answer
    x = 477,823.83

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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.