Home / 1,385,894.52-2,078,841.66-521,491.86

Finding the Fourth Proportional to 1,385,894.52, 2,078,841.66 and 521,491.86

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Solution

The fourth proportional to 1,385,894.52, 2,078,841.66 and 521,491.86 is: 782,237.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,385,894.52 : 2,078,841.66 = 521,491.86 : x
  2. Step 2: Convert to fraction form
    1,385,894.52/2,078,841.66 = 521,491.86/x
  3. Step 3: Cross multiply
    1,385,894.52x = 2,078,841.66 × 521,491.86
  4. Step 4: Simplify right side
    1,385,894.52x = 1,084,099,003,918.89
  5. Step 5: Solve for x
    x = 1,084,099,003,918.89/1,385,894.52
  6. Step 6: Final answer
    x = 782,237.74

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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.