Home / 390,640,844.22-539,084,955.54-212,024,796.60

Finding the Fourth Proportional to 390,640,844.22, 539,084,955.54 and 212,024,796.60

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Solution

The fourth proportional to 390,640,844.22, 539,084,955.54 and 212,024,796.60 is: 292,594,539.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,640,844.22 : 539,084,955.54 = 212,024,796.60 : x
  2. Step 2: Convert to fraction form
    390,640,844.22/539,084,955.54 = 212,024,796.60/x
  3. Step 3: Cross multiply
    390,640,844.22x = 539,084,955.54 × 212,024,796.60
  4. Step 4: Simplify right side
    390,640,844.22x = 114,299,378,048,488,528
  5. Step 5: Solve for x
    x = 114,299,378,048,488,528/390,640,844.22
  6. Step 6: Final answer
    x = 292,594,539.82

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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.