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Finding the Fourth Proportional to 702,113,308.88, 968,919,603.01 and 388,840,955.36

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Solution

The fourth proportional to 702,113,308.88, 968,919,603.01 and 388,840,955.36 is: 536,602,310.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,113,308.88 : 968,919,603.01 = 388,840,955.36 : x
  2. Step 2: Convert to fraction form
    702,113,308.88/968,919,603.01 = 388,840,955.36/x
  3. Step 3: Cross multiply
    702,113,308.88x = 968,919,603.01 × 388,840,955.36
  4. Step 4: Simplify right side
    702,113,308.88x = 376,755,624,095,623,680
  5. Step 5: Solve for x
    x = 376,755,624,095,623,680/702,113,308.88
  6. Step 6: Final answer
    x = 536,602,310.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.