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Finding the Fourth Proportional to 519,479.19, 717,000.63 and 304,688.45

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Solution

The fourth proportional to 519,479.19, 717,000.63 and 304,688.45 is: 420,540.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,479.19 : 717,000.63 = 304,688.45 : x
  2. Step 2: Convert to fraction form
    519,479.19/717,000.63 = 304,688.45/x
  3. Step 3: Cross multiply
    519,479.19x = 717,000.63 × 304,688.45
  4. Step 4: Simplify right side
    519,479.19x = 218,461,809,080.28
  5. Step 5: Solve for x
    x = 218,461,809,080.28/519,479.19
  6. Step 6: Final answer
    x = 420,540.06

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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.