Home / 493,945.66-681,394.47-312,351.58

Finding the Fourth Proportional to 493,945.66, 681,394.47 and 312,351.58

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Solution

The fourth proportional to 493,945.66, 681,394.47 and 312,351.58 is: 430,886.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    493,945.66 : 681,394.47 = 312,351.58 : x
  2. Step 2: Convert to fraction form
    493,945.66/681,394.47 = 312,351.58/x
  3. Step 3: Cross multiply
    493,945.66x = 681,394.47 × 312,351.58
  4. Step 4: Simplify right side
    493,945.66x = 212,834,639,307.76
  5. Step 5: Solve for x
    x = 212,834,639,307.76/493,945.66
  6. Step 6: Final answer
    x = 430,886.75

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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.