Home / 1,389,434.71-1,917,419.90-753,530.71

Finding the Fourth Proportional to 1,389,434.71, 1,917,419.90 and 753,530.71

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Solution

The fourth proportional to 1,389,434.71, 1,917,419.90 and 753,530.71 is: 1,039,872.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,434.71 : 1,917,419.90 = 753,530.71 : x
  2. Step 2: Convert to fraction form
    1,389,434.71/1,917,419.90 = 753,530.71/x
  3. Step 3: Cross multiply
    1,389,434.71x = 1,917,419.90 × 753,530.71
  4. Step 4: Simplify right side
    1,389,434.71x = 1,444,834,778,615.13
  5. Step 5: Solve for x
    x = 1,444,834,778,615.13/1,389,434.71
  6. Step 6: Final answer
    x = 1,039,872.38

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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.