Home / 498,495.09-687,919.71-272,140.59

Finding the Fourth Proportional to 498,495.09, 687,919.71 and 272,140.59

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Solution

The fourth proportional to 498,495.09, 687,919.71 and 272,140.59 is: 375,552.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    498,495.09 : 687,919.71 = 272,140.59 : x
  2. Step 2: Convert to fraction form
    498,495.09/687,919.71 = 272,140.59/x
  3. Step 3: Cross multiply
    498,495.09x = 687,919.71 × 272,140.59
  4. Step 4: Simplify right side
    498,495.09x = 187,210,875,752.03
  5. Step 5: Solve for x
    x = 187,210,875,752.03/498,495.09
  6. Step 6: Final answer
    x = 375,552.10

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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.