Home / 711,412.69-1,067,120.85-290,688.56

Finding the Fourth Proportional to 711,412.69, 1,067,120.85 and 290,688.56

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Solution

The fourth proportional to 711,412.69, 1,067,120.85 and 290,688.56 is: 436,033.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,412.69 : 1,067,120.85 = 290,688.56 : x
  2. Step 2: Convert to fraction form
    711,412.69/1,067,120.85 = 290,688.56/x
  3. Step 3: Cross multiply
    711,412.69x = 1,067,120.85 × 290,688.56
  4. Step 4: Simplify right side
    711,412.69x = 310,199,823,232.48
  5. Step 5: Solve for x
    x = 310,199,823,232.48/711,412.69
  6. Step 6: Final answer
    x = 436,033.58

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Double scale
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Similar ratio
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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.