Home / 993,839.80-1,490,759.70-328,905.40

Finding the Fourth Proportional to 993,839.80, 1,490,759.70 and 328,905.40

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Solution

The fourth proportional to 993,839.80, 1,490,759.70 and 328,905.40 is: 493,358.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,839.80 : 1,490,759.70 = 328,905.40 : x
  2. Step 2: Convert to fraction form
    993,839.80/1,490,759.70 = 328,905.40/x
  3. Step 3: Cross multiply
    993,839.80x = 1,490,759.70 × 328,905.40
  4. Step 4: Simplify right side
    993,839.80x = 490,318,915,432.38
  5. Step 5: Solve for x
    x = 490,318,915,432.38/993,839.80
  6. Step 6: Final answer
    x = 493,358.10

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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.