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Finding the Fourth Proportional to 578,295.86, 867,740.28 and 279,031.64

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Solution

The fourth proportional to 578,295.86, 867,740.28 and 279,031.64 is: 418,690.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,295.86 : 867,740.28 = 279,031.64 : x
  2. Step 2: Convert to fraction form
    578,295.86/867,740.28 = 279,031.64/x
  3. Step 3: Cross multiply
    578,295.86x = 867,740.28 × 279,031.64
  4. Step 4: Simplify right side
    578,295.86x = 242,126,993,422.46
  5. Step 5: Solve for x
    x = 242,126,993,422.46/578,295.86
  6. Step 6: Final answer
    x = 418,690.52

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.