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Finding the Fourth Proportional to 663,552,431.80, 995,328,647.70 and 623,208,470.20

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Solution

The fourth proportional to 663,552,431.80, 995,328,647.70 and 623,208,470.20 is: 934,812,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,552,431.80 : 995,328,647.70 = 623,208,470.20 : x
  2. Step 2: Convert to fraction form
    663,552,431.80/995,328,647.70 = 623,208,470.20/x
  3. Step 3: Cross multiply
    663,552,431.80x = 995,328,647.70 × 623,208,470.20
  4. Step 4: Simplify right side
    663,552,431.80x = 620,297,243,879,351,808
  5. Step 5: Solve for x
    x = 620,297,243,879,351,808/663,552,431.80
  6. Step 6: Final answer
    x = 934,812,705.30

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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.