Home / 1,221,124.98-1,685,255.67-677,435.76

Finding the Fourth Proportional to 1,221,124.98, 1,685,255.67 and 677,435.76

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Solution

The fourth proportional to 1,221,124.98, 1,685,255.67 and 677,435.76 is: 934,918.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,221,124.98 : 1,685,255.67 = 677,435.76 : x
  2. Step 2: Convert to fraction form
    1,221,124.98/1,685,255.67 = 677,435.76/x
  3. Step 3: Cross multiply
    1,221,124.98x = 1,685,255.67 × 677,435.76
  4. Step 4: Simplify right side
    1,221,124.98x = 1,141,652,455,600.76
  5. Step 5: Solve for x
    x = 1,141,652,455,600.76/1,221,124.98
  6. Step 6: Final answer
    x = 934,918.60

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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.