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Finding the Fourth Proportional to 553,811,420.98, 764,495,083.03 and 345,070,696.40

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Solution

The fourth proportional to 553,811,420.98, 764,495,083.03 and 345,070,696.40 is: 476,344,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,811,420.98 : 764,495,083.03 = 345,070,696.40 : x
  2. Step 2: Convert to fraction form
    553,811,420.98/764,495,083.03 = 345,070,696.40/x
  3. Step 3: Cross multiply
    553,811,420.98x = 764,495,083.03 × 345,070,696.40
  4. Step 4: Simplify right side
    553,811,420.98x = 263,804,850,690,852,768
  5. Step 5: Solve for x
    x = 263,804,850,690,852,768/553,811,420.98
  6. Step 6: Final answer
    x = 476,344,186.30

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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.