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Finding the Fourth Proportional to 993,760.40, 1,489,328.40 and 880,911.20

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Solution

The fourth proportional to 993,760.40, 1,489,328.40 and 880,911.20 is: 1,320,203.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    993,760.40 : 1,489,328.40 = 880,911.20 : x
  2. Step 2: Convert to fraction form
    993,760.40/1,489,328.40 = 880,911.20/x
  3. Step 3: Cross multiply
    993,760.40x = 1,489,328.40 × 880,911.20
  4. Step 4: Simplify right side
    993,760.40x = 1,311,966,068,038.08
  5. Step 5: Solve for x
    x = 1,311,966,068,038.08/993,760.40
  6. Step 6: Final answer
    x = 1,320,203.61

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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.