Home / 1,272,929.76-1,756,205.88-789,320.88

Finding the Fourth Proportional to 1,272,929.76, 1,756,205.88 and 789,320.88

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Solution

The fourth proportional to 1,272,929.76, 1,756,205.88 and 789,320.88 is: 1,088,991.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,272,929.76 : 1,756,205.88 = 789,320.88 : x
  2. Step 2: Convert to fraction form
    1,272,929.76/1,756,205.88 = 789,320.88/x
  3. Step 3: Cross multiply
    1,272,929.76x = 1,756,205.88 × 789,320.88
  4. Step 4: Simplify right side
    1,272,929.76x = 1,386,209,970,662.77
  5. Step 5: Solve for x
    x = 1,386,209,970,662.77/1,272,929.76
  6. Step 6: Final answer
    x = 1,088,991.72

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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.