Home / 781,528.20-1,172,000.70-308,115.60

Finding the Fourth Proportional to 781,528.20, 1,172,000.70 and 308,115.60

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Solution

The fourth proportional to 781,528.20, 1,172,000.70 and 308,115.60 is: 462,058.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,528.20 : 1,172,000.70 = 308,115.60 : x
  2. Step 2: Convert to fraction form
    781,528.20/1,172,000.70 = 308,115.60/x
  3. Step 3: Cross multiply
    781,528.20x = 1,172,000.70 × 308,115.60
  4. Step 4: Simplify right side
    781,528.20x = 361,111,698,880.92
  5. Step 5: Solve for x
    x = 361,111,698,880.92/781,528.20
  6. Step 6: Final answer
    x = 462,058.44

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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.