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Finding the Fourth Proportional to 572,940.87, 790,308.09 and 340,210.05

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Solution

The fourth proportional to 572,940.87, 790,308.09 and 340,210.05 is: 469,281.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,940.87 : 790,308.09 = 340,210.05 : x
  2. Step 2: Convert to fraction form
    572,940.87/790,308.09 = 340,210.05/x
  3. Step 3: Cross multiply
    572,940.87x = 790,308.09 × 340,210.05
  4. Step 4: Simplify right side
    572,940.87x = 268,870,754,814.30
  5. Step 5: Solve for x
    x = 268,870,754,814.30/572,940.87
  6. Step 6: Final answer
    x = 469,281.86

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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.