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Finding the Fourth Proportional to 993,400.80, 1,490,158.80 and 283,480.80

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Solution

The fourth proportional to 993,400.80, 1,490,158.80 and 283,480.80 is: 425,237.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,400.80 : 1,490,158.80 = 283,480.80 : x
  2. Step 2: Convert to fraction form
    993,400.80/1,490,158.80 = 283,480.80/x
  3. Step 3: Cross multiply
    993,400.80x = 1,490,158.80 × 283,480.80
  4. Step 4: Simplify right side
    993,400.80x = 422,431,408,751.04
  5. Step 5: Solve for x
    x = 422,431,408,751.04/993,400.80
  6. Step 6: Final answer
    x = 425,237.64

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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.