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Finding the Fourth Proportional to 707,485.20, 974,469.87 and 543,828.66

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Solution

The fourth proportional to 707,485.20, 974,469.87 and 543,828.66 is: 749,054.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,485.20 : 974,469.87 = 543,828.66 : x
  2. Step 2: Convert to fraction form
    707,485.20/974,469.87 = 543,828.66/x
  3. Step 3: Cross multiply
    707,485.20x = 974,469.87 × 543,828.66
  4. Step 4: Simplify right side
    707,485.20x = 529,944,643,612.47
  5. Step 5: Solve for x
    x = 529,944,643,612.47/707,485.20
  6. Step 6: Final answer
    x = 749,054.03

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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.