Home / 1,422,965.21-1,963,666.17-778,379.76

Finding the Fourth Proportional to 1,422,965.21, 1,963,666.17 and 778,379.76

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Solution

The fourth proportional to 1,422,965.21, 1,963,666.17 and 778,379.76 is: 1,074,149.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,422,965.21 : 1,963,666.17 = 778,379.76 : x
  2. Step 2: Convert to fraction form
    1,422,965.21/1,963,666.17 = 778,379.76/x
  3. Step 3: Cross multiply
    1,422,965.21x = 1,963,666.17 × 778,379.76
  4. Step 4: Simplify right side
    1,422,965.21x = 1,528,478,002,124.72
  5. Step 5: Solve for x
    x = 1,528,478,002,124.72/1,422,965.21
  6. Step 6: Final answer
    x = 1,074,149.95

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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.