Home / 1,389,446.84-1,917,797.10-786,184.76

Finding the Fourth Proportional to 1,389,446.84, 1,917,797.10 and 786,184.76

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Solution

The fourth proportional to 1,389,446.84, 1,917,797.10 and 786,184.76 is: 1,085,138.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,446.84 : 1,917,797.10 = 786,184.76 : x
  2. Step 2: Convert to fraction form
    1,389,446.84/1,917,797.10 = 786,184.76/x
  3. Step 3: Cross multiply
    1,389,446.84x = 1,917,797.10 × 786,184.76
  4. Step 4: Simplify right side
    1,389,446.84x = 1,507,742,852,792.20
  5. Step 5: Solve for x
    x = 1,507,742,852,792.20/1,389,446.84
  6. Step 6: Final answer
    x = 1,085,138.93

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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.