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Finding the Fourth Proportional to 610,368,002.80, 915,552,004.20 and 543,855,209.20

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Solution

The fourth proportional to 610,368,002.80, 915,552,004.20 and 543,855,209.20 is: 815,782,813.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    610,368,002.80 : 915,552,004.20 = 543,855,209.20 : x
  2. Step 2: Convert to fraction form
    610,368,002.80/915,552,004.20 = 543,855,209.20/x
  3. Step 3: Cross multiply
    610,368,002.80x = 915,552,004.20 × 543,855,209.20
  4. Step 4: Simplify right side
    610,368,002.80x = 497,927,726,777,670,336
  5. Step 5: Solve for x
    x = 497,927,726,777,670,336/610,368,002.80
  6. Step 6: Final answer
    x = 815,782,813.80

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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.