Home / 1,420,897.60-1,960,813.20-776,301.76

Finding the Fourth Proportional to 1,420,897.60, 1,960,813.20 and 776,301.76

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Solution

The fourth proportional to 1,420,897.60, 1,960,813.20 and 776,301.76 is: 1,071,282.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,897.60 : 1,960,813.20 = 776,301.76 : x
  2. Step 2: Convert to fraction form
    1,420,897.60/1,960,813.20 = 776,301.76/x
  3. Step 3: Cross multiply
    1,420,897.60x = 1,960,813.20 × 776,301.76
  4. Step 4: Simplify right side
    1,420,897.60x = 1,522,182,738,191.23
  5. Step 5: Solve for x
    x = 1,522,182,738,191.23/1,420,897.60
  6. Step 6: Final answer
    x = 1,071,282.50

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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.