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Finding the Fourth Proportional to 578,713.18, 798,900.96 and 385,442.32

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Solution

The fourth proportional to 578,713.18, 798,900.96 and 385,442.32 is: 532,094.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,713.18 : 798,900.96 = 385,442.32 : x
  2. Step 2: Convert to fraction form
    578,713.18/798,900.96 = 385,442.32/x
  3. Step 3: Cross multiply
    578,713.18x = 798,900.96 × 385,442.32
  4. Step 4: Simplify right side
    578,713.18x = 307,930,239,472.63
  5. Step 5: Solve for x
    x = 307,930,239,472.63/578,713.18
  6. Step 6: Final answer
    x = 532,094.74

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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.