Home / 428,355,868.66-590,913,543.77-279,763,968.59

Finding the Fourth Proportional to 428,355,868.66, 590,913,543.77 and 279,763,968.59

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Solution

The fourth proportional to 428,355,868.66, 590,913,543.77 and 279,763,968.59 is: 385,932,189.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,355,868.66 : 590,913,543.77 = 279,763,968.59 : x
  2. Step 2: Convert to fraction form
    428,355,868.66/590,913,543.77 = 279,763,968.59/x
  3. Step 3: Cross multiply
    428,355,868.66x = 590,913,543.77 × 279,763,968.59
  4. Step 4: Simplify right side
    428,355,868.66x = 165,316,318,097,587,520
  5. Step 5: Solve for x
    x = 165,316,318,097,587,520/428,355,868.66
  6. Step 6: Final answer
    x = 385,932,189.08

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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.