Home / 1,289,411.70-1,779,315.70-772,907.14

Finding the Fourth Proportional to 1,289,411.70, 1,779,315.70 and 772,907.14

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Solution

The fourth proportional to 1,289,411.70, 1,779,315.70 and 772,907.14 is: 1,066,568.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,411.70 : 1,779,315.70 = 772,907.14 : x
  2. Step 2: Convert to fraction form
    1,289,411.70/1,779,315.70 = 772,907.14/x
  3. Step 3: Cross multiply
    1,289,411.70x = 1,779,315.70 × 772,907.14
  4. Step 4: Simplify right side
    1,289,411.70x = 1,375,245,808,844.10
  5. Step 5: Solve for x
    x = 1,375,245,808,844.10/1,289,411.70
  6. Step 6: Final answer
    x = 1,066,568.43

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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.