Home / 921,016.76-1,270,653.78-558,308.36

Finding the Fourth Proportional to 921,016.76, 1,270,653.78 and 558,308.36

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Solution

The fourth proportional to 921,016.76, 1,270,653.78 and 558,308.36 is: 770,253.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    921,016.76 : 1,270,653.78 = 558,308.36 : x
  2. Step 2: Convert to fraction form
    921,016.76/1,270,653.78 = 558,308.36/x
  3. Step 3: Cross multiply
    921,016.76x = 1,270,653.78 × 558,308.36
  4. Step 4: Simplify right side
    921,016.76x = 709,416,628,039.60
  5. Step 5: Solve for x
    x = 709,416,628,039.60/921,016.76
  6. Step 6: Final answer
    x = 770,253.77

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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.