Home / 420,193,644.40-630,290,466.60-414,454,081.60

Finding the Fourth Proportional to 420,193,644.40, 630,290,466.60 and 414,454,081.60

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Solution

The fourth proportional to 420,193,644.40, 630,290,466.60 and 414,454,081.60 is: 621,681,122.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,193,644.40 : 630,290,466.60 = 414,454,081.60 : x
  2. Step 2: Convert to fraction form
    420,193,644.40/630,290,466.60 = 414,454,081.60/x
  3. Step 3: Cross multiply
    420,193,644.40x = 630,290,466.60 × 414,454,081.60
  4. Step 4: Simplify right side
    420,193,644.40x = 261,226,456,475,938,496
  5. Step 5: Solve for x
    x = 261,226,456,475,938,496/420,193,644.40
  6. Step 6: Final answer
    x = 621,681,122.40

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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.