Home / 515,014,633.54-710,725,255.14-280,070,399.44

Finding the Fourth Proportional to 515,014,633.54, 710,725,255.14 and 280,070,399.44

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Solution

The fourth proportional to 515,014,633.54, 710,725,255.14 and 280,070,399.44 is: 386,499,903.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,014,633.54 : 710,725,255.14 = 280,070,399.44 : x
  2. Step 2: Convert to fraction form
    515,014,633.54/710,725,255.14 = 280,070,399.44/x
  3. Step 3: Cross multiply
    515,014,633.54x = 710,725,255.14 × 280,070,399.44
  4. Step 4: Simplify right side
    515,014,633.54x = 199,053,106,099,155,712
  5. Step 5: Solve for x
    x = 199,053,106,099,155,712/515,014,633.54
  6. Step 6: Final answer
    x = 386,499,903.37

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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.