Home / 1,421,590.92-1,962,009.18-870,635.40

Finding the Fourth Proportional to 1,421,590.92, 1,962,009.18 and 870,635.40

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Solution

The fourth proportional to 1,421,590.92, 1,962,009.18 and 870,635.40 is: 1,201,607.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,421,590.92 : 1,962,009.18 = 870,635.40 : x
  2. Step 2: Convert to fraction form
    1,421,590.92/1,962,009.18 = 870,635.40/x
  3. Step 3: Cross multiply
    1,421,590.92x = 1,962,009.18 × 870,635.40
  4. Step 4: Simplify right side
    1,421,590.92x = 1,708,194,647,232.97
  5. Step 5: Solve for x
    x = 1,708,194,647,232.97/1,421,590.92
  6. Step 6: Final answer
    x = 1,201,607.74

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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.