Home / 1,689,854.32-2,331,983.74-915,467.40

Finding the Fourth Proportional to 1,689,854.32, 2,331,983.74 and 915,467.40

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Solution

The fourth proportional to 1,689,854.32, 2,331,983.74 and 915,467.40 is: 1,263,336.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,854.32 : 2,331,983.74 = 915,467.40 : x
  2. Step 2: Convert to fraction form
    1,689,854.32/2,331,983.74 = 915,467.40/x
  3. Step 3: Cross multiply
    1,689,854.32x = 2,331,983.74 × 915,467.40
  4. Step 4: Simplify right side
    1,689,854.32x = 2,134,855,091,300.08
  5. Step 5: Solve for x
    x = 2,134,855,091,300.08/1,689,854.32
  6. Step 6: Final answer
    x = 1,263,336.77

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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.