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Finding the Fourth Proportional to 993,406.80, 1,490,167.80 and 283,486.80

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Solution

The fourth proportional to 993,406.80, 1,490,167.80 and 283,486.80 is: 425,246.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,406.80 : 1,490,167.80 = 283,486.80 : x
  2. Step 2: Convert to fraction form
    993,406.80/1,490,167.80 = 283,486.80/x
  3. Step 3: Cross multiply
    993,406.80x = 1,490,167.80 × 283,486.80
  4. Step 4: Simplify right side
    993,406.80x = 422,442,901,085.04
  5. Step 5: Solve for x
    x = 422,442,901,085.04/993,406.80
  6. Step 6: Final answer
    x = 425,246.64

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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.