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Finding the Fourth Proportional to 539,191,202.40, 808,786,803.60 and 518,028,040.80

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Solution

The fourth proportional to 539,191,202.40, 808,786,803.60 and 518,028,040.80 is: 777,042,061.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,191,202.40 : 808,786,803.60 = 518,028,040.80 : x
  2. Step 2: Convert to fraction form
    539,191,202.40/808,786,803.60 = 518,028,040.80/x
  3. Step 3: Cross multiply
    539,191,202.40x = 808,786,803.60 × 518,028,040.80
  4. Step 4: Simplify right side
    539,191,202.40x = 418,974,243,293,802,432
  5. Step 5: Solve for x
    x = 418,974,243,293,802,432/539,191,202.40
  6. Step 6: Final answer
    x = 777,042,061.20

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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.