Home / 410,112,499.60-615,168,749.40-391,972,646.80

Finding the Fourth Proportional to 410,112,499.60, 615,168,749.40 and 391,972,646.80

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Solution

The fourth proportional to 410,112,499.60, 615,168,749.40 and 391,972,646.80 is: 587,958,970.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,112,499.60 : 615,168,749.40 = 391,972,646.80 : x
  2. Step 2: Convert to fraction form
    410,112,499.60/615,168,749.40 = 391,972,646.80/x
  3. Step 3: Cross multiply
    410,112,499.60x = 615,168,749.40 × 391,972,646.80
  4. Step 4: Simplify right side
    410,112,499.60x = 241,129,322,930,963,904
  5. Step 5: Solve for x
    x = 241,129,322,930,963,904/410,112,499.60
  6. Step 6: Final answer
    x = 587,958,970.20

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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.