Home / 649,279.65-973,919.48-410,131.20

Finding the Fourth Proportional to 649,279.65, 973,919.48 and 410,131.20

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Solution

The fourth proportional to 649,279.65, 973,919.48 and 410,131.20 is: 615,196.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,279.65 : 973,919.48 = 410,131.20 : x
  2. Step 2: Convert to fraction form
    649,279.65/973,919.48 = 410,131.20/x
  3. Step 3: Cross multiply
    649,279.65x = 973,919.48 × 410,131.20
  4. Step 4: Simplify right side
    649,279.65x = 399,434,762,985.12
  5. Step 5: Solve for x
    x = 399,434,762,985.12/649,279.65
  6. Step 6: Final answer
    x = 615,196.80

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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.