Home / 915,507,989.47-1,263,247,860.99-539,239,494.61

Finding the Fourth Proportional to 915,507,989.47, 1,263,247,860.99 and 539,239,494.61

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Solution

The fourth proportional to 915,507,989.47, 1,263,247,860.99 and 539,239,494.61 is: 744,060,287.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    915,507,989.47 : 1,263,247,860.99 = 539,239,494.61 : x
  2. Step 2: Convert to fraction form
    915,507,989.47/1,263,247,860.99 = 539,239,494.61/x
  3. Step 3: Cross multiply
    915,507,989.47x = 1,263,247,860.99 × 539,239,494.61
  4. Step 4: Simplify right side
    915,507,989.47x = 681,193,138,127,411,200
  5. Step 5: Solve for x
    x = 681,193,138,127,411,200/915,507,989.47
  6. Step 6: Final answer
    x = 744,060,287.80

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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.