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Finding the Fourth Proportional to 1,919,224.80, 2,877,454.80 and 1,078,034.40

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Solution

The fourth proportional to 1,919,224.80, 2,877,454.80 and 1,078,034.40 is: 1,616,275.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919,224.80 : 2,877,454.80 = 1,078,034.40 : x
  2. Step 2: Convert to fraction form
    1,919,224.80/2,877,454.80 = 1,078,034.40/x
  3. Step 3: Cross multiply
    1,919,224.80x = 2,877,454.80 × 1,078,034.40
  4. Step 4: Simplify right side
    1,919,224.80x = 3,101,995,258,845.12
  5. Step 5: Solve for x
    x = 3,101,995,258,845.12/1,919,224.80
  6. Step 6: Final answer
    x = 1,616,275.10

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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.