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Finding the Fourth Proportional to 531,902.80, 796,979.40 and 442,673.20

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Solution

The fourth proportional to 531,902.80, 796,979.40 and 442,673.20 is: 663,281.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,902.80 : 796,979.40 = 442,673.20 : x
  2. Step 2: Convert to fraction form
    531,902.80/796,979.40 = 442,673.20/x
  3. Step 3: Cross multiply
    531,902.80x = 796,979.40 × 442,673.20
  4. Step 4: Simplify right side
    531,902.80x = 352,801,421,332.08
  5. Step 5: Solve for x
    x = 352,801,421,332.08/531,902.80
  6. Step 6: Final answer
    x = 663,281.75

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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.