Home / 649,268.10-973,902.15-425,319.30

Finding the Fourth Proportional to 649,268.10, 973,902.15 and 425,319.30

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Solution

The fourth proportional to 649,268.10, 973,902.15 and 425,319.30 is: 637,978.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,268.10 : 973,902.15 = 425,319.30 : x
  2. Step 2: Convert to fraction form
    649,268.10/973,902.15 = 425,319.30/x
  3. Step 3: Cross multiply
    649,268.10x = 973,902.15 × 425,319.30
  4. Step 4: Simplify right side
    649,268.10x = 414,219,380,706.50
  5. Step 5: Solve for x
    x = 414,219,380,706.50/649,268.10
  6. Step 6: Final answer
    x = 637,978.95

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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.