Home / 649,810.20-974,715.30-621,816.60

Finding the Fourth Proportional to 649,810.20, 974,715.30 and 621,816.60

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Solution

The fourth proportional to 649,810.20, 974,715.30 and 621,816.60 is: 932,724.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,810.20 : 974,715.30 = 621,816.60 : x
  2. Step 2: Convert to fraction form
    649,810.20/974,715.30 = 621,816.60/x
  3. Step 3: Cross multiply
    649,810.20x = 974,715.30 × 621,816.60
  4. Step 4: Simplify right side
    649,810.20x = 606,094,153,813.98
  5. Step 5: Solve for x
    x = 606,094,153,813.98/649,810.20
  6. Step 6: Final answer
    x = 932,724.90

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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.