Home / 870,905.88-1,201,639.68-508,122.72

Finding the Fourth Proportional to 870,905.88, 1,201,639.68 and 508,122.72

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Solution

The fourth proportional to 870,905.88, 1,201,639.68 and 508,122.72 is: 701,086.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,905.88 : 1,201,639.68 = 508,122.72 : x
  2. Step 2: Convert to fraction form
    870,905.88/1,201,639.68 = 508,122.72/x
  3. Step 3: Cross multiply
    870,905.88x = 1,201,639.68 × 508,122.72
  4. Step 4: Simplify right side
    870,905.88x = 610,580,422,661.53
  5. Step 5: Solve for x
    x = 610,580,422,661.53/870,905.88
  6. Step 6: Final answer
    x = 701,086.58

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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.