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Finding the Fourth Proportional to 555,055.58, 765,907.35 and 313,308.38

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Solution

The fourth proportional to 555,055.58, 765,907.35 and 313,308.38 is: 432,326.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,055.58 : 765,907.35 = 313,308.38 : x
  2. Step 2: Convert to fraction form
    555,055.58/765,907.35 = 313,308.38/x
  3. Step 3: Cross multiply
    555,055.58x = 765,907.35 × 313,308.38
  4. Step 4: Simplify right side
    555,055.58x = 239,965,191,058.59
  5. Step 5: Solve for x
    x = 239,965,191,058.59/555,055.58
  6. Step 6: Final answer
    x = 432,326.42

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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.