Home / 830,459,067.90-1,244,014,562.70-518,609,489.10

Finding the Fourth Proportional to 830,459,067.90, 1,244,014,562.70 and 518,609,489.10

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Solution

The fourth proportional to 830,459,067.90, 1,244,014,562.70 and 518,609,489.10 is: 776,868,820.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,459,067.90 : 1,244,014,562.70 = 518,609,489.10 : x
  2. Step 2: Convert to fraction form
    830,459,067.90/1,244,014,562.70 = 518,609,489.10/x
  3. Step 3: Cross multiply
    830,459,067.90x = 1,244,014,562.70 × 518,609,489.10
  4. Step 4: Simplify right side
    830,459,067.90x = 645,157,756,794,806,912
  5. Step 5: Solve for x
    x = 645,157,756,794,806,912/830,459,067.90
  6. Step 6: Final answer
    x = 776,868,820.79

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1.5x scale

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.