Home / 1,389,493.55-1,917,535.16-777,641.51

Finding the Fourth Proportional to 1,389,493.55, 1,917,535.16 and 777,641.51

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Solution

The fourth proportional to 1,389,493.55, 1,917,535.16 and 777,641.51 is: 1,073,164.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,493.55 : 1,917,535.16 = 777,641.51 : x
  2. Step 2: Convert to fraction form
    1,389,493.55/1,917,535.16 = 777,641.51/x
  3. Step 3: Cross multiply
    1,389,493.55x = 1,917,535.16 × 777,641.51
  4. Step 4: Simplify right side
    1,389,493.55x = 1,491,154,937,300.49
  5. Step 5: Solve for x
    x = 1,491,154,937,300.49/1,389,493.55
  6. Step 6: Final answer
    x = 1,073,164.35

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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.