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Finding the Fourth Proportional to 554,624.88, 765,316.47 and 312,893.34

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Solution

The fourth proportional to 554,624.88, 765,316.47 and 312,893.34 is: 431,755.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,624.88 : 765,316.47 = 312,893.34 : x
  2. Step 2: Convert to fraction form
    554,624.88/765,316.47 = 312,893.34/x
  3. Step 3: Cross multiply
    554,624.88x = 765,316.47 × 312,893.34
  4. Step 4: Simplify right side
    554,624.88x = 239,462,426,455.31
  5. Step 5: Solve for x
    x = 239,462,426,455.31/554,624.88
  6. Step 6: Final answer
    x = 431,755.65

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1.5x scale

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.