Home / 1,689,840-2,331,979.20-925,920.90

Finding the Fourth Proportional to 1,689,840, 2,331,979.20 and 925,920.90

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Solution

The fourth proportional to 1,689,840, 2,331,979.20 and 925,920.90 is: 1,277,770.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,689,840 : 2,331,979.20 = 925,920.90 : x
  2. Step 2: Convert to fraction form
    1,689,840/2,331,979.20 = 925,920.90/x
  3. Step 3: Cross multiply
    1,689,840x = 2,331,979.20 × 925,920.90
  4. Step 4: Simplify right side
    1,689,840x = 2,159,228,279,645.28
  5. Step 5: Solve for x
    x = 2,159,228,279,645.28/1,689,840
  6. Step 6: Final answer
    x = 1,277,770.84

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1.5x scale

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.