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Finding the Fourth Proportional to 630,010.40, 945,015.60 and 405,624.20

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Solution

The fourth proportional to 630,010.40, 945,015.60 and 405,624.20 is: 608,436.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,010.40 : 945,015.60 = 405,624.20 : x
  2. Step 2: Convert to fraction form
    630,010.40/945,015.60 = 405,624.20/x
  3. Step 3: Cross multiply
    630,010.40x = 945,015.60 × 405,624.20
  4. Step 4: Simplify right side
    630,010.40x = 383,321,196,737.52
  5. Step 5: Solve for x
    x = 383,321,196,737.52/630,010.40
  6. Step 6: Final answer
    x = 608,436.30

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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.