Home / 862,217,415.74-1,189,860,555-465,740,580.46

Finding the Fourth Proportional to 862,217,415.74, 1,189,860,555 and 465,740,580.46

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Solution

The fourth proportional to 862,217,415.74, 1,189,860,555 and 465,740,580.46 is: 642,722,282.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,217,415.74 : 1,189,860,555 = 465,740,580.46 : x
  2. Step 2: Convert to fraction form
    862,217,415.74/1,189,860,555 = 465,740,580.46/x
  3. Step 3: Cross multiply
    862,217,415.74x = 1,189,860,555 × 465,740,580.46
  4. Step 4: Simplify right side
    862,217,415.74x = 554,166,345,549,183,104
  5. Step 5: Solve for x
    x = 554,166,345,549,183,104/862,217,415.74
  6. Step 6: Final answer
    x = 642,722,282.61

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1.5x scale

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.