Home / 1,354,937.28-1,869,678.72-782,161.98

Finding the Fourth Proportional to 1,354,937.28, 1,869,678.72 and 782,161.98

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Solution

The fourth proportional to 1,354,937.28, 1,869,678.72 and 782,161.98 is: 1,079,305.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,937.28 : 1,869,678.72 = 782,161.98 : x
  2. Step 2: Convert to fraction form
    1,354,937.28/1,869,678.72 = 782,161.98/x
  3. Step 3: Cross multiply
    1,354,937.28x = 1,869,678.72 × 782,161.98
  4. Step 4: Simplify right side
    1,354,937.28x = 1,462,391,609,599.07
  5. Step 5: Solve for x
    x = 1,462,391,609,599.07/1,354,937.28
  6. Step 6: Final answer
    x = 1,079,305.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.