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Finding the Fourth Proportional to 993,407.80, 1,490,169.30 and 283,487.80

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Solution

The fourth proportional to 993,407.80, 1,490,169.30 and 283,487.80 is: 425,248.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,407.80 : 1,490,169.30 = 283,487.80 : x
  2. Step 2: Convert to fraction form
    993,407.80/1,490,169.30 = 283,487.80/x
  3. Step 3: Cross multiply
    993,407.80x = 1,490,169.30 × 283,487.80
  4. Step 4: Simplify right side
    993,407.80x = 422,444,816,484.54
  5. Step 5: Solve for x
    x = 422,444,816,484.54/993,407.80
  6. Step 6: Final answer
    x = 425,248.14

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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.