Home / 1,218,345.30-1,820,113.42-788,378.36

Finding the Fourth Proportional to 1,218,345.30, 1,820,113.42 and 788,378.36

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Solution

The fourth proportional to 1,218,345.30, 1,820,113.42 and 788,378.36 is: 1,177,776.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,345.30 : 1,820,113.42 = 788,378.36 : x
  2. Step 2: Convert to fraction form
    1,218,345.30/1,820,113.42 = 788,378.36/x
  3. Step 3: Cross multiply
    1,218,345.30x = 1,820,113.42 × 788,378.36
  4. Step 4: Simplify right side
    1,218,345.30x = 1,434,938,033,073.59
  5. Step 5: Solve for x
    x = 1,434,938,033,073.59/1,218,345.30
  6. Step 6: Final answer
    x = 1,177,776.15

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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.