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Finding the Fourth Proportional to 554,482.56, 765,154.10 and 312,750.72

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Solution

The fourth proportional to 554,482.56, 765,154.10 and 312,750.72 is: 431,578.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,482.56 : 765,154.10 = 312,750.72 : x
  2. Step 2: Convert to fraction form
    554,482.56/765,154.10 = 312,750.72/x
  3. Step 3: Cross multiply
    554,482.56x = 765,154.10 × 312,750.72
  4. Step 4: Simplify right side
    554,482.56x = 239,302,494,708.61
  5. Step 5: Solve for x
    x = 239,302,494,708.61/554,482.56
  6. Step 6: Final answer
    x = 431,578.03

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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.