Home / 865,140.12-1,295,969.94-431,550.36

Finding the Fourth Proportional to 865,140.12, 1,295,969.94 and 431,550.36

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Solution

The fourth proportional to 865,140.12, 1,295,969.94 and 431,550.36 is: 646,457.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,140.12 : 1,295,969.94 = 431,550.36 : x
  2. Step 2: Convert to fraction form
    865,140.12/1,295,969.94 = 431,550.36/x
  3. Step 3: Cross multiply
    865,140.12x = 1,295,969.94 × 431,550.36
  4. Step 4: Simplify right side
    865,140.12x = 559,276,294,156.18
  5. Step 5: Solve for x
    x = 559,276,294,156.18/865,140.12
  6. Step 6: Final answer
    x = 646,457.47

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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.