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Finding the Fourth Proportional to 554,461.56, 765,165.76 and 312,748.94

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Solution

The fourth proportional to 554,461.56, 765,165.76 and 312,748.94 is: 431,598.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,461.56 : 765,165.76 = 312,748.94 : x
  2. Step 2: Convert to fraction form
    554,461.56/765,165.76 = 312,748.94/x
  3. Step 3: Cross multiply
    554,461.56x = 765,165.76 × 312,748.94
  4. Step 4: Simplify right side
    554,461.56x = 239,304,781,495.34
  5. Step 5: Solve for x
    x = 239,304,781,495.34/554,461.56
  6. Step 6: Final answer
    x = 431,598.51

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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.