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Finding the Fourth Proportional to 402,960.80, 604,441.20 and 297,984.80

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Solution

The fourth proportional to 402,960.80, 604,441.20 and 297,984.80 is: 446,977.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,960.80 : 604,441.20 = 297,984.80 : x
  2. Step 2: Convert to fraction form
    402,960.80/604,441.20 = 297,984.80/x
  3. Step 3: Cross multiply
    402,960.80x = 604,441.20 × 297,984.80
  4. Step 4: Simplify right side
    402,960.80x = 180,114,290,093.76
  5. Step 5: Solve for x
    x = 180,114,290,093.76/402,960.80
  6. Step 6: Final answer
    x = 446,977.20

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Similar ratio
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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.