Home / 656,918.46-906,548.80-355,112.46

Finding the Fourth Proportional to 656,918.46, 906,548.80 and 355,112.46

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Solution

The fourth proportional to 656,918.46, 906,548.80 and 355,112.46 is: 490,055.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,918.46 : 906,548.80 = 355,112.46 : x
  2. Step 2: Convert to fraction form
    656,918.46/906,548.80 = 355,112.46/x
  3. Step 3: Cross multiply
    656,918.46x = 906,548.80 × 355,112.46
  4. Step 4: Simplify right side
    656,918.46x = 321,926,774,478.05
  5. Step 5: Solve for x
    x = 321,926,774,478.05/656,918.46
  6. Step 6: Final answer
    x = 490,055.91

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Double scale
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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.