Home / 427,739,960.10-641,609,940.15-155,119,620.90

Finding the Fourth Proportional to 427,739,960.10, 641,609,940.15 and 155,119,620.90

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Solution

The fourth proportional to 427,739,960.10, 641,609,940.15 and 155,119,620.90 is: 232,679,431.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,739,960.10 : 641,609,940.15 = 155,119,620.90 : x
  2. Step 2: Convert to fraction form
    427,739,960.10/641,609,940.15 = 155,119,620.90/x
  3. Step 3: Cross multiply
    427,739,960.10x = 641,609,940.15 × 155,119,620.90
  4. Step 4: Simplify right side
    427,739,960.10x = 99,526,290,681,739,696
  5. Step 5: Solve for x
    x = 99,526,290,681,739,696/427,739,960.10
  6. Step 6: Final answer
    x = 232,679,431.35

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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.