Home / 885,780.38-1,222,415.63-498,620.76

Finding the Fourth Proportional to 885,780.38, 1,222,415.63 and 498,620.76

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Solution

The fourth proportional to 885,780.38, 1,222,415.63 and 498,620.76 is: 688,118.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    885,780.38 : 1,222,415.63 = 498,620.76 : x
  2. Step 2: Convert to fraction form
    885,780.38/1,222,415.63 = 498,620.76/x
  3. Step 3: Cross multiply
    885,780.38x = 1,222,415.63 × 498,620.76
  4. Step 4: Simplify right side
    885,780.38x = 609,521,807,973.38
  5. Step 5: Solve for x
    x = 609,521,807,973.38/885,780.38
  6. Step 6: Final answer
    x = 688,118.44

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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.