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Finding the Fourth Proportional to 559,708.45, 772,397.94 and 317,991.44

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Solution

The fourth proportional to 559,708.45, 772,397.94 and 317,991.44 is: 438,828.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,708.45 : 772,397.94 = 317,991.44 : x
  2. Step 2: Convert to fraction form
    559,708.45/772,397.94 = 317,991.44/x
  3. Step 3: Cross multiply
    559,708.45x = 772,397.94 × 317,991.44
  4. Step 4: Simplify right side
    559,708.45x = 245,615,936,317.10
  5. Step 5: Solve for x
    x = 245,615,936,317.10/559,708.45
  6. Step 6: Final answer
    x = 438,828.35

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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.