Home / 1,423,209.89-1,964,051.79-778,640.85

Finding the Fourth Proportional to 1,423,209.89, 1,964,051.79 and 778,640.85

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Solution

The fourth proportional to 1,423,209.89, 1,964,051.79 and 778,640.85 is: 1,074,536.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,209.89 : 1,964,051.79 = 778,640.85 : x
  2. Step 2: Convert to fraction form
    1,423,209.89/1,964,051.79 = 778,640.85/x
  3. Step 3: Cross multiply
    1,423,209.89x = 1,964,051.79 × 778,640.85
  4. Step 4: Simplify right side
    1,423,209.89x = 1,529,290,955,209.62
  5. Step 5: Solve for x
    x = 1,529,290,955,209.62/1,423,209.89
  6. Step 6: Final answer
    x = 1,074,536.49

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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.