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Finding the Fourth Proportional to 1,948,009.40, 2,920,045.80 and 883,815.20

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Solution

The fourth proportional to 1,948,009.40, 2,920,045.80 and 883,815.20 is: 1,324,829.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948,009.40 : 2,920,045.80 = 883,815.20 : x
  2. Step 2: Convert to fraction form
    1,948,009.40/2,920,045.80 = 883,815.20/x
  3. Step 3: Cross multiply
    1,948,009.40x = 2,920,045.80 × 883,815.20
  4. Step 4: Simplify right side
    1,948,009.40x = 2,580,780,862,736.16
  5. Step 5: Solve for x
    x = 2,580,780,862,736.16/1,948,009.40
  6. Step 6: Final answer
    x = 1,324,829.78

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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.