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Finding the Fourth Proportional to 556,980.80, 768,637.36 and 302,331.92

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Solution

The fourth proportional to 556,980.80, 768,637.36 and 302,331.92 is: 417,220.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,980.80 : 768,637.36 = 302,331.92 : x
  2. Step 2: Convert to fraction form
    556,980.80/768,637.36 = 302,331.92/x
  3. Step 3: Cross multiply
    556,980.80x = 768,637.36 × 302,331.92
  4. Step 4: Simplify right side
    556,980.80x = 232,383,608,832.53
  5. Step 5: Solve for x
    x = 232,383,608,832.53/556,980.80
  6. Step 6: Final answer
    x = 417,220.14

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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.