Home / 915,459,007.60-1,373,188,511.40-340,911,449.20

Finding the Fourth Proportional to 915,459,007.60, 1,373,188,511.40 and 340,911,449.20

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Solution

The fourth proportional to 915,459,007.60, 1,373,188,511.40 and 340,911,449.20 is: 511,367,173.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,459,007.60 : 1,373,188,511.40 = 340,911,449.20 : x
  2. Step 2: Convert to fraction form
    915,459,007.60/1,373,188,511.40 = 340,911,449.20/x
  3. Step 3: Cross multiply
    915,459,007.60x = 1,373,188,511.40 × 340,911,449.20
  4. Step 4: Simplify right side
    915,459,007.60x = 468,135,685,446,164,736
  5. Step 5: Solve for x
    x = 468,135,685,446,164,736/915,459,007.60
  6. Step 6: Final answer
    x = 511,367,173.80

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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.