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Finding the Fourth Proportional to 554,988.93, 765,886.98 and 300,340.11

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Solution

The fourth proportional to 554,988.93, 765,886.98 and 300,340.11 is: 414,470.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,988.93 : 765,886.98 = 300,340.11 : x
  2. Step 2: Convert to fraction form
    554,988.93/765,886.98 = 300,340.11/x
  3. Step 3: Cross multiply
    554,988.93x = 765,886.98 × 300,340.11
  4. Step 4: Simplify right side
    554,988.93x = 230,026,583,819.12
  5. Step 5: Solve for x
    x = 230,026,583,819.12/554,988.93
  6. Step 6: Final answer
    x = 414,470.58

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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.