Home / 428,355,779.57-590,913,421.50-279,763,879.52

Finding the Fourth Proportional to 428,355,779.57, 590,913,421.50 and 279,763,879.52

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Solution

The fourth proportional to 428,355,779.57, 590,913,421.50 and 279,763,879.52 is: 385,932,066.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,355,779.57 : 590,913,421.50 = 279,763,879.52 : x
  2. Step 2: Convert to fraction form
    428,355,779.57/590,913,421.50 = 279,763,879.52/x
  3. Step 3: Cross multiply
    428,355,779.57x = 590,913,421.50 × 279,763,879.52
  4. Step 4: Simplify right side
    428,355,779.57x = 165,316,231,258,523,584
  5. Step 5: Solve for x
    x = 165,316,231,258,523,584/428,355,779.57
  6. Step 6: Final answer
    x = 385,932,066.62

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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.