Home / 649,306.40-973,297.20-438,965.60

Finding the Fourth Proportional to 649,306.40, 973,297.20 and 438,965.60

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Solution

The fourth proportional to 649,306.40, 973,297.20 and 438,965.60 is: 658,000.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,306.40 : 973,297.20 = 438,965.60 : x
  2. Step 2: Convert to fraction form
    649,306.40/973,297.20 = 438,965.60/x
  3. Step 3: Cross multiply
    649,306.40x = 973,297.20 × 438,965.60
  4. Step 4: Simplify right side
    649,306.40x = 427,243,989,376.32
  5. Step 5: Solve for x
    x = 427,243,989,376.32/649,306.40
  6. Step 6: Final answer
    x = 658,000.58

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Double scale
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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.