Home / 1,420,428.80-1,960,178.76-775,848.80

Finding the Fourth Proportional to 1,420,428.80, 1,960,178.76 and 775,848.80

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Solution

The fourth proportional to 1,420,428.80, 1,960,178.76 and 775,848.80 is: 1,070,664.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,428.80 : 1,960,178.76 = 775,848.80 : x
  2. Step 2: Convert to fraction form
    1,420,428.80/1,960,178.76 = 775,848.80/x
  3. Step 3: Cross multiply
    1,420,428.80x = 1,960,178.76 × 775,848.80
  4. Step 4: Simplify right side
    1,420,428.80x = 1,520,802,338,731.49
  5. Step 5: Solve for x
    x = 1,520,802,338,731.49/1,420,428.80
  6. Step 6: Final answer
    x = 1,070,664.25

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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.