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Finding the Fourth Proportional to 554,898.51, 765,762.54 and 313,191.27

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Solution

The fourth proportional to 554,898.51, 765,762.54 and 313,191.27 is: 432,205.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,898.51 : 765,762.54 = 313,191.27 : x
  2. Step 2: Convert to fraction form
    554,898.51/765,762.54 = 313,191.27/x
  3. Step 3: Cross multiply
    554,898.51x = 765,762.54 × 313,191.27
  4. Step 4: Simplify right side
    554,898.51x = 239,830,142,421.03
  5. Step 5: Solve for x
    x = 239,830,142,421.03/554,898.51
  6. Step 6: Final answer
    x = 432,205.42

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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.