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Finding the Fourth Proportional to 554,470.94, 765,168.99 and 312,752.77

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Solution

The fourth proportional to 554,470.94, 765,168.99 and 312,752.77 is: 431,598.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,470.94 : 765,168.99 = 312,752.77 : x
  2. Step 2: Convert to fraction form
    554,470.94/765,168.99 = 312,752.77/x
  3. Step 3: Cross multiply
    554,470.94x = 765,168.99 × 312,752.77
  4. Step 4: Simplify right side
    554,470.94x = 239,308,721,140.60
  5. Step 5: Solve for x
    x = 239,308,721,140.60/554,470.94
  6. Step 6: Final answer
    x = 431,598.31

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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.