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Finding the Fourth Proportional to 556,116,653.80, 834,174,980.70 and 427,374,087.40

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Solution

The fourth proportional to 556,116,653.80, 834,174,980.70 and 427,374,087.40 is: 641,061,131.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,116,653.80 : 834,174,980.70 = 427,374,087.40 : x
  2. Step 2: Convert to fraction form
    556,116,653.80/834,174,980.70 = 427,374,087.40/x
  3. Step 3: Cross multiply
    556,116,653.80x = 834,174,980.70 × 427,374,087.40
  4. Step 4: Simplify right side
    556,116,653.80x = 356,504,771,108,575,104
  5. Step 5: Solve for x
    x = 356,504,771,108,575,104/556,116,653.80
  6. Step 6: Final answer
    x = 641,061,131.10

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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.