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Finding the Fourth Proportional to 556,917.80, 835,376.70 and 400,620.20

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Solution

The fourth proportional to 556,917.80, 835,376.70 and 400,620.20 is: 600,930.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,917.80 : 835,376.70 = 400,620.20 : x
  2. Step 2: Convert to fraction form
    556,917.80/835,376.70 = 400,620.20/x
  3. Step 3: Cross multiply
    556,917.80x = 835,376.70 × 400,620.20
  4. Step 4: Simplify right side
    556,917.80x = 334,668,780,629.34
  5. Step 5: Solve for x
    x = 334,668,780,629.34/556,917.80
  6. Step 6: Final answer
    x = 600,930.30

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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.