Home / 815,696.42-1,222,287.10-436,667.45

Finding the Fourth Proportional to 815,696.42, 1,222,287.10 and 436,667.45

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Solution

The fourth proportional to 815,696.42, 1,222,287.10 and 436,667.45 is: 654,327.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,696.42 : 1,222,287.10 = 436,667.45 : x
  2. Step 2: Convert to fraction form
    815,696.42/1,222,287.10 = 436,667.45/x
  3. Step 3: Cross multiply
    815,696.42x = 1,222,287.10 × 436,667.45
  4. Step 4: Simplify right side
    815,696.42x = 533,732,983,921.79
  5. Step 5: Solve for x
    x = 533,732,983,921.79/815,696.42
  6. Step 6: Final answer
    x = 654,327.98

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.