Home / 1,423,788.30-1,964,828.61-779,208.12

Finding the Fourth Proportional to 1,423,788.30, 1,964,828.61 and 779,208.12

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Solution

The fourth proportional to 1,423,788.30, 1,964,828.61 and 779,208.12 is: 1,075,307.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,423,788.30 : 1,964,828.61 = 779,208.12 : x
  2. Step 2: Convert to fraction form
    1,423,788.30/1,964,828.61 = 779,208.12/x
  3. Step 3: Cross multiply
    1,423,788.30x = 1,964,828.61 × 779,208.12
  4. Step 4: Simplify right side
    1,423,788.30x = 1,531,010,407,320.31
  5. Step 5: Solve for x
    x = 1,531,010,407,320.31/1,423,788.30
  6. Step 6: Final answer
    x = 1,075,307.62

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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.