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Finding the Fourth Proportional to 554,809, 765,740.26 and 316,345

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Solution

The fourth proportional to 554,809, 765,740.26 and 316,345 is: 436,615.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,809 : 765,740.26 = 316,345 : x
  2. Step 2: Convert to fraction form
    554,809/765,740.26 = 316,345/x
  3. Step 3: Cross multiply
    554,809x = 765,740.26 × 316,345
  4. Step 4: Simplify right side
    554,809x = 242,238,102,549.70
  5. Step 5: Solve for x
    x = 242,238,102,549.70/554,809
  6. Step 6: Final answer
    x = 436,615.31

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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.