Home / 1,053,118.65-1,453,310.81-645,221.25

Finding the Fourth Proportional to 1,053,118.65, 1,453,310.81 and 645,221.25

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Solution

The fourth proportional to 1,053,118.65, 1,453,310.81 and 645,221.25 is: 890,409.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,053,118.65 : 1,453,310.81 = 645,221.25 : x
  2. Step 2: Convert to fraction form
    1,053,118.65/1,453,310.81 = 645,221.25/x
  3. Step 3: Cross multiply
    1,053,118.65x = 1,453,310.81 × 645,221.25
  4. Step 4: Simplify right side
    1,053,118.65x = 937,707,014,240.61
  5. Step 5: Solve for x
    x = 937,707,014,240.61/1,053,118.65
  6. Step 6: Final answer
    x = 890,409.66

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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.