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Finding the Fourth Proportional to 554,460.72, 765,155.16 and 299,811.28

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Solution

The fourth proportional to 554,460.72, 765,155.16 and 299,811.28 is: 413,739.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,460.72 : 765,155.16 = 299,811.28 : x
  2. Step 2: Convert to fraction form
    554,460.72/765,155.16 = 299,811.28/x
  3. Step 3: Cross multiply
    554,460.72x = 765,155.16 × 299,811.28
  4. Step 4: Simplify right side
    554,460.72x = 229,402,147,918.21
  5. Step 5: Solve for x
    x = 229,402,147,918.21/554,460.72
  6. Step 6: Final answer
    x = 413,739.22

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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.