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Finding the Fourth Proportional to 1,560,672, 2,341,013.76 and 378,720

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Solution

The fourth proportional to 1,560,672, 2,341,013.76 and 378,720 is: 568,081.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,560,672 : 2,341,013.76 = 378,720 : x
  2. Step 2: Convert to fraction form
    1,560,672/2,341,013.76 = 378,720/x
  3. Step 3: Cross multiply
    1,560,672x = 2,341,013.76 × 378,720
  4. Step 4: Simplify right side
    1,560,672x = 886,588,731,187.20
  5. Step 5: Solve for x
    x = 886,588,731,187.20/1,560,672
  6. Step 6: Final answer
    x = 568,081.40

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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.