Home / 1,420,930.94-1,960,861.77-776,337.28

Finding the Fourth Proportional to 1,420,930.94, 1,960,861.77 and 776,337.28

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Solution

The fourth proportional to 1,420,930.94, 1,960,861.77 and 776,337.28 is: 1,071,332.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,930.94 : 1,960,861.77 = 776,337.28 : x
  2. Step 2: Convert to fraction form
    1,420,930.94/1,960,861.77 = 776,337.28/x
  3. Step 3: Cross multiply
    1,420,930.94x = 1,960,861.77 × 776,337.28
  4. Step 4: Simplify right side
    1,420,930.94x = 1,522,290,088,075.63
  5. Step 5: Solve for x
    x = 1,522,290,088,075.63/1,420,930.94
  6. Step 6: Final answer
    x = 1,071,332.92

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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.