Home / 859,742.20-1,289,613.30-334,430.20

Finding the Fourth Proportional to 859,742.20, 1,289,613.30 and 334,430.20

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Solution

The fourth proportional to 859,742.20, 1,289,613.30 and 334,430.20 is: 501,645.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,742.20 : 1,289,613.30 = 334,430.20 : x
  2. Step 2: Convert to fraction form
    859,742.20/1,289,613.30 = 334,430.20/x
  3. Step 3: Cross multiply
    859,742.20x = 1,289,613.30 × 334,430.20
  4. Step 4: Simplify right side
    859,742.20x = 431,285,633,841.66
  5. Step 5: Solve for x
    x = 431,285,633,841.66/859,742.20
  6. Step 6: Final answer
    x = 501,645.30

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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.