Home / 859,613.10-1,289,419.65-434,460.30

Finding the Fourth Proportional to 859,613.10, 1,289,419.65 and 434,460.30

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Solution

The fourth proportional to 859,613.10, 1,289,419.65 and 434,460.30 is: 651,690.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    859,613.10 : 1,289,419.65 = 434,460.30 : x
  2. Step 2: Convert to fraction form
    859,613.10/1,289,419.65 = 434,460.30/x
  3. Step 3: Cross multiply
    859,613.10x = 1,289,419.65 × 434,460.30
  4. Step 4: Simplify right side
    859,613.10x = 560,201,647,964.90
  5. Step 5: Solve for x
    x = 560,201,647,964.90/859,613.10
  6. Step 6: Final answer
    x = 651,690.45

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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.