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Finding the Fourth Proportional to 554,928.08, 765,714.12 and 316,418

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Solution

The fourth proportional to 554,928.08, 765,714.12 and 316,418 is: 436,607.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,928.08 : 765,714.12 = 316,418 : x
  2. Step 2: Convert to fraction form
    554,928.08/765,714.12 = 316,418/x
  3. Step 3: Cross multiply
    554,928.08x = 765,714.12 × 316,418
  4. Step 4: Simplify right side
    554,928.08x = 242,285,730,422.16
  5. Step 5: Solve for x
    x = 242,285,730,422.16/554,928.08
  6. Step 6: Final answer
    x = 436,607.44

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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.