Home / 1,389,439.63-1,917,426.69-753,535.63

Finding the Fourth Proportional to 1,389,439.63, 1,917,426.69 and 753,535.63

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Solution

The fourth proportional to 1,389,439.63, 1,917,426.69 and 753,535.63 is: 1,039,879.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,439.63 : 1,917,426.69 = 753,535.63 : x
  2. Step 2: Convert to fraction form
    1,389,439.63/1,917,426.69 = 753,535.63/x
  3. Step 3: Cross multiply
    1,389,439.63x = 1,917,426.69 × 753,535.63
  4. Step 4: Simplify right side
    1,389,439.63x = 1,444,849,315,473.15
  5. Step 5: Solve for x
    x = 1,444,849,315,473.15/1,389,439.63
  6. Step 6: Final answer
    x = 1,039,879.16

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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.