Home / 649,276.80-973,915.20-410,128.35

Finding the Fourth Proportional to 649,276.80, 973,915.20 and 410,128.35

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Solution

The fourth proportional to 649,276.80, 973,915.20 and 410,128.35 is: 615,192.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,276.80 : 973,915.20 = 410,128.35 : x
  2. Step 2: Convert to fraction form
    649,276.80/973,915.20 = 410,128.35/x
  3. Step 3: Cross multiply
    649,276.80x = 973,915.20 × 410,128.35
  4. Step 4: Simplify right side
    649,276.80x = 399,430,234,015.92
  5. Step 5: Solve for x
    x = 399,430,234,015.92/649,276.80
  6. Step 6: Final answer
    x = 615,192.53

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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.