Home / 1,218,341.30-1,820,107.45-788,374.36

Finding the Fourth Proportional to 1,218,341.30, 1,820,107.45 and 788,374.36

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Solution

The fourth proportional to 1,218,341.30, 1,820,107.45 and 788,374.36 is: 1,177,770.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,341.30 : 1,820,107.45 = 788,374.36 : x
  2. Step 2: Convert to fraction form
    1,218,341.30/1,820,107.45 = 788,374.36/x
  3. Step 3: Cross multiply
    1,218,341.30x = 1,820,107.45 × 788,374.36
  4. Step 4: Simplify right side
    1,218,341.30x = 1,434,926,046,024.98
  5. Step 5: Solve for x
    x = 1,434,926,046,024.98/1,218,341.30
  6. Step 6: Final answer
    x = 1,177,770.17

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.