Home / 663,552,403.80-995,328,605.70-405,563,386.20

Finding the Fourth Proportional to 663,552,403.80, 995,328,605.70 and 405,563,386.20

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Solution

The fourth proportional to 663,552,403.80, 995,328,605.70 and 405,563,386.20 is: 608,345,079.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,552,403.80 : 995,328,605.70 = 405,563,386.20 : x
  2. Step 2: Convert to fraction form
    663,552,403.80/995,328,605.70 = 405,563,386.20/x
  3. Step 3: Cross multiply
    663,552,403.80x = 995,328,605.70 × 405,563,386.20
  4. Step 4: Simplify right side
    663,552,403.80x = 403,668,839,709,416,640
  5. Step 5: Solve for x
    x = 403,668,839,709,416,640/663,552,403.80
  6. Step 6: Final answer
    x = 608,345,079.30

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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.