Home / 1,689,713.79-2,331,810.21-915,352.57

Finding the Fourth Proportional to 1,689,713.79, 2,331,810.21 and 915,352.57

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Solution

The fourth proportional to 1,689,713.79, 2,331,810.21 and 915,352.57 is: 1,263,189.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,713.79 : 2,331,810.21 = 915,352.57 : x
  2. Step 2: Convert to fraction form
    1,689,713.79/2,331,810.21 = 915,352.57/x
  3. Step 3: Cross multiply
    1,689,713.79x = 2,331,810.21 × 915,352.57
  4. Step 4: Simplify right side
    1,689,713.79x = 2,134,428,468,475.74
  5. Step 5: Solve for x
    x = 2,134,428,468,475.74/1,689,713.79
  6. Step 6: Final answer
    x = 1,263,189.35

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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.